Hybrid iguanas IGU139 A and IGU141 B from the island of St. Vincent. (see text for more information) 1. medium (B) to large subtympanic plate (A) 2. mosaic of small scales 3. low number of small neck tubercles 4. no horn (A) or very short horns (B) 5. no white visible in the eye 6. yellowish-brown eye (A) or light brown eye (B) 7. grey-green coloration (A, B) or green-black coloration (B). None of these morphological features conform with the characteristics of I. insularis insularis.