caribbean herpetology note Iguana delicatissima (Lesser Antillean Olivier Lorvelec, INRA, UMR985 Écologie et Santé des Écosystèmes, Campus de Beaulieu, Rennes, 35000, France, Iguana). Conservation. [email protected]. Date of observation: 9 May 2010. Location: Guadeloupe, Îles Citation: Lorvelec O. 2012. Iguana delicatissima (Lesser de La Petite Terre, Île de Terre de Bas. Coordinates: 16.1716, Antillean Iguana). Conservation. Caribbean Herpetology -61.1205. Elevation: 3 m. Voucher: image by C. Pavis. The 29:1. nature reserve of Petite Terre hosts the highest population density (Lorvelec O, Pascal M., Pavis C & Feldmann P, 2007, Applied Herpetology, 4, 131-161) of this endangered species (Breuil M, Day M & Knapp C, 2010, Iguana delicatissima, in IUCN Red List of Threatened Species). We observed a mature iguana with a trifid tail perched in a tree (Pisonia sp.). Tail fur- cations in insular rock iguana populations (genus Cyclura) were only recorded in populations that coexist with intro- duced mammalian predators, especially Ship Rats (Rattus rat- tus), and appeared to be results of failed predation attempts (Hayes WK, Iverson JB, Knapp CR & Carter RL, 2012, Biodivers Conserv, DOI 10.1007/s10531-012-0276-4). Our observa- tion suggests that R. rattus might pose a potential threat to the iguana population of Petite Terre. A similar interaction probably occurred in Guadeloupe, where a 19th-century I. delicatissima with a trifid tail was reported by Brygoo (1990 ‘1989’, Bull Mus Natl Hist Nat, sér 4 A, 11(3), 3-112, p 73). Ac- companied by Julien Athanase, Nicolas Barré, Joël Berchel, Mathieu Brossaud, Laurent Malglaive, and Claudie Pavis. Published online 26 April 2012 1 Caribbean Herpetology 29:1 ISSN 2333-2468 www.caribbeanherpetology.org