Bulimus peruvianus Bruguière, 1789, by subsequent designation (Gray 1847).

The genus is extant and distributed in Chile and Argentina, its type species is endemic to Chile. All the species have a minutely rugose, granulate or striate protoconch.

El Morro hill (27°08'43"S, 70°55'42"W) and Aguas verdes sector (26°52'S, 70°48'W), Commune of Caldera, JFA 100112, 35 specimens, RMNH.MOL.329662 (lot).

Shells elongate-globose, imperforate, whorls convex with a pattern of axial and spiral brownish streaks. Last whorl ample, lip simple.

From Iquique (20°30'S, 69°30'W) to Huasco (Valdovinos and Stuardo 1988). This species was moderately abundant in the area, living in sand near cacti, and in rocky outcrops.

El Morro hill (27°08'43"S, 70°55'42"W), Commune of Caldera, JFA 100113, 12 specimens. Hills near Vallenar (28°34'S, 70°45'W), October 2010, RCG (unnumbered), 25 specimens.

Shells stout, elongate-globose, with convex or very convex whorls, decorated with axial and spiral brownish streaks and spots. Last whorl very ample, lip simple, rimate umbilicus.

Huasco (28°20'S, 71°15'W) (Valdovinos and Stuardo 1988). This is the northernmost record for the species. This species is easily distinguished from Plectostylus broderipii due to the conspicuous rimate umbilicus, the more globose whorls, stouter shell and shorter spire.

Barranquilla beach (27°21'29"S, 70°20'24"W), Commune of Caldera, RCG (unnumbered), 5 specimens. Aguas verdes (26°52'S, 70°48'W), Commune of Caldera, 3 specimens. MZUC 39619 (lot).

Shells thin, elongate-globose, with convex and slightly shouldered whorls, decorated with axial greyish, and brownish-reddish, streaks. Last whorl very ample, lip simple, periostracum shiny and transparent.

Huasco (28°20'S, 71°15'W) (Valdovinos and Stuardo 1988). The specimens here studied constitute the northernmost record for this species. Breure and Ablett (2012) synonymized this species as Plectostylus broderipii. However, the shells here examined were much lighter, thinner and broader than Plectostylus broderipii. Shell patterns, which are contained in the thin outer shell layer, can easily differenciate Plectostylus elegans from Plectostylus broderipii in having axially marked reddish-brown lines, even in juvenile specimens. Only extensive comparative anatomy, including soft parts as well as shell morphology, would certainly help to establish its true identity.

no material seen.

Shell subrimate, ovate-conic, thin, marked with irregular chestnut streaks. Whorls six, a little convex, apex obtuse, aperture oval, peristome simple (Valdovinos and Stuardo 1988).

Cerro Bravo, Copiapó (Pilsbry 1897). Valdovinos and Stuardo (1988), in their review of the genus, could no locate specimens of this species. Although this species has been cited for the area, searches at the type locality were unsuccessful. This may represent an extinct taxon.

Fray Jorge National Park (30°40'S, 71°40'W), Region of Coquimbo, July 2006, RCG (unnumbered), 3 specimens.

This elongated Plectostylus species has a thin and somewhat fusiform shell, with an acute, long spire and five slightly convex whorls, sculptured with minute granules and growth lines. The aperture is narrow and descending, somewhat expanded in the anterior side. Periostracum is thin, opaque and yellowish.

Valdovinos and Stuardo (1988) cited this species from Paposo (25°05'S, 70°25'W) to Huasco. This species was not found in the area under current study.

Hills near Vallenar (28°34'S, 70°45'W), RCG (unnumbered), 5 specimens.

This relatively large species (up to 52 mm) has a thin but stout shell, with an acute, somewhat short spire and five slightly convex whorls sculptured by thin growth lines and fine spiral threads. The aperture is large, oval and slightly angulated in the columellar lip, which is completely white in its anterior part.

Valdovinos and Stuardo (1988) cited this species from Paposo (25°05'S, 70°25'W) to Lomas de Huasco (28°20'S, 71°15'W). According to Breure and Ablett (2012) this species is a subjective synonym of Plectostylus broderipii. The specimens here examined seem slightly different; the shells are more elongated, with a larger aperture and a more acute spire. Some specimens have rimate shells, with a pseudo-umbilicus formed by the folding of the columellar lip. These specimens have a thin, opaque, persistent and delicate brownish periostracum.

Stephacharopa calderaensis Miquel & Araya, 2013, by original designation (Miquel and Araya 2013).

The genus is extant and distributed in Chile and Argentina, its type species is restricted to the Region of Atacama, northern Chile. Protoconchs of species within the genus have 40–60 axial, smooth and low ribs.

El Morro hills (27°8'33"S, 70°55'35"W), Commune of Caldera, August 2012, JFA 100127, 37 specimens MZUC 39613 (lot), RMNH.MOL 329670 (lot). Quebrada del León sector (26°57'S, 70°44'W), JFA 100128, 12 specimens.

This species has a tiny (largest specimen: 3.1 mm width), orbicular, low-spired shell, sculptured by numerous axial lamellae (about 90–95 in last whorl), with a depressed apex, a thin and brownish periostracum and an ample umbilicus. Live animals are unknown.

According to Miquel and Araya (2013) this species has a patchy distribution, having been found only in the vicinites of the port of Caldera, Region of Atacama, Chile.

Marinula pepita King, 1832, by monotypy.

The genus is extant and distributed in South Africa, New Zealand and Chile, its type species is found from Ecuador to Chile.

Caldera Bay (27°04'S, 70°49'W), Commune of Caldera, July 12 2012, JFA 100501, 21 specimens.

This species have small shells (up to about 11 mm), brownish or reddish in colour, higher than wider, of short spire, a large last whorl and an impressed suture. Aperture is simple, with a thin lip with a tooth in the inner external lip and three more in the columellar area. Animals are traslucent, with darker tentacles and a comparatively short foot.

This species has been cited from Coquimbo to Chiloé Island, Chile (Keen 1971), and in Lima, Peru (Paredes et al. 2005). The specimens here examined constitute the northernmost record of this species in Chile. It has been found that this species feeds on remains of birds, fishes and sea urchins (Paredes et al. 2005).

Sarnia frumentum Petit de Saussaye, 1842, by subsequent designation (H. A. Adams 1855).

The genus and its type species are extant and distributed in Chile and Peru.

Aguas Verdes (26°52'S, 70°48'W), Commune of Caldera, August 2011, JFA 100502, 15 specimens.

This is one of the smallest terrestrial snails found in northern Chile. They have small (up to about 7 mm) whitish-orangish shells, of subcylindrical shape, with a simple and sharp aperture, with three plyes in the columellar side.

This species has been cited from El Callao, Peru to Chañaral, Chile (Paredes et al. 2005). This is the southernmost record for this species in Chile. It has been found that this species feeds on remains of birds, fishes and sea urchins (Paredes et al. 2005).

Pupa hordacea Gabb, 1866, by original designation.

The subgenus is extant and distributed in USA, northern Mexico, Cuba and Chile, its type species is restricted to southern USA.

El Morro hill (27°8'33"S, 70°55'35"W) and Zoológico de Piedra (26°56'20"S, 70°47'14"W), Commune of Caldera, September 2012 and January 2013, JFA 100126, 52 specimens, MZUC 39612 (lot), RMNH.MOL 329669 (lot).

This species has a tiny (up to 6 mm), whitish and elongated shell, sculptured by widely separated axial lamellae, with a small aperture and a thin and brownish periostracum.

Paposo to La Serena (Stuardo and Vargas-Almonacid 2000). Here the species seem to be narrowly distributed, with small but abundant communities found in elevated rocky areas facing the Pacific Ocean.

Bulinus chilensis Sowerby I, 1833, by subsequent designation (Klappenbach and Olazarri 1970).

The genus and type species are extant and endemic to Chile; protoconchs of all species of the genus have a characteristic spiral striation.

Caleta Pajonales (27°43'S, 71°02'W), Commune of Copiapó, September 2005, RCG (unnumbered), 4 specimens.

This species have small (up to 23 mm), pale brown, thin ovate-oblong shells, minutely sculptured by fine spiral lines, with a reflexed and delicate thin lip and a comparatively large protoconch decorated by spiral threads. This is the smallest species in the Strophocheilidae.

Freirina (28°30'S, 71°04'W) and Huasco (28°20'S, 71°15'W) (Stuardo and Vega 1985). This is the northernmost record for the species.

Chañaral de Aceituno (29°01'35"S, 71°26'20"W), Commune of Freirina, February 2008, RCG (unnumbered), 33 specimens. MZUC 39615.

This species has ovate-oblong, shells (up to 39 mm), with a thin, brownish periostracum and a slightly flattened apex. They are easily distinguished by their solid and thick whitish shell and their thickened, lamellate outer lip. On magnification the surface of the shell has a rugose appearance, especially in the subsutural area, due to very fine spiral threads crossed by thin axial lines (Fig. 2.8).

Questa de Arenas, Huasco (28°20'S, 71°15'W) and Coquimbo (29°57'S, 71°20'W) (Stuardo and Vega 1985). The specimens studied here constitute the northernmost record for the species.

Rocky hills north of Copiapo (27°21'29"S, 70°20'24"W), Commune of Copiapó, April 4 2006, JFA 100101. Pichidangui (32°08'39"S, 71°31'15"W) and Los Molles (32°13'56"S, 71°29'23"W), Region of Valparaíso, 2008, RCG (unnumbered), 9 specimens.

This species has large (up to 89 mm in examined specimens), brownish and elongate shells decorated with growth lines. Shells have crenulated sutures, a large protoconch and a thick lip. Animals have an orange or brownish body, with short grey tentacles.

From Huasco to Chiloé Island (42°S, 73°W) (Stuardo and Vega 1985). This is the northernmost record for the species.

Cornu copiae Born, 1778 (= Helix aspersa Müller, 1774), by original designation. The genus is extant and native to Europe.

Mirador de Charito sector, Caldera city (27°3'45"S, 70°50'8"W), Commune of Caldera, July 2012, JFA 100129, 2 specimens.

This very common species has a distinctive low-spired, brown shell with yellowish and brownish markings and four or five whorls.

According to Valdovinos (1999) this species has records in Chile from La Serena (29°54'S, 71°15'W) to the Chiloé Island, and the Juan Fernandez Archipelago (33°38'S, 78°84'W). This is the northernmost record of this species in Chile and it is the only introduced land snail species found in the area.