Cryptoconchus floridanus (Dall, 1889). Scanning electron images of a specimen from Isla Perez (CNMO4996, 9.3 mm length). A dorsal view of head valve (I), SB = 500 μm C dorsal view of tail valve (VIII), SB = 500 μm E dorsal view of intermediate valve IV, SB = 100 μm F ventral view of intermediate valve IV. Juvenile specimen from Isla Perez (CNMO4996, 7.1 mm length) B dorsal view of tail valve (VIII), SB = 100 μm D dorsal view of intermediate valve IV, SB = 100 μm.