BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



Hispaniola and Jamaica have 19 genera in common. Jamaica has 

 no genus that is not also found in Hispaniola, while Hispaniola has 

 13 that do not occur in Jamaica — a condition perhaps to be expected 

 as Hispaniola is so much the larger of the two islands. 



The tiny isolated rock called Navassa supports 10 genera, all of 

 which are represented in Hispaniola, including the highly specialized 

 iguanid genus Chamaelinorops, which is not known from any other 

 localities except Navassa and western Haiti. 



Surveying the islands east of Hispaniola, we find that Puerto Rico 

 has only one (nonendemic!) genus — Phyllodactylus — which is not 

 represented on Hispaniola, while Mona does not have a single genus 

 peculiar to itself. Puerto Rico lacks 15 of the genera that charac- 

 terize Hispaniola, while the two islands have 16 genera in common. 



DISTRIBUTION OP HISPANIOLAN SPECIES 



Table 2 lists the species found in Hispaniola and indicates their 

 distribution among the various regions. 



1 A dagger (t) indicates species peculiar to the southwestern mountains of Haiti. 



