98 Proceedings of the Biological Society of Washington. 



canoes and pumice floated ashore upon several islands of the 

 group. This current was also noted by Schomburgk, who visited 

 Anegada about 1836 and who attributed some of the geologic 

 shore formations upon that island to the fact that they were 

 deposits of current-borne silt from the Orinoco River laid down 

 upon her shores. The important and interesting point is that 

 in spite of this evidently strong and efficient current there is no 

 evidence that it has had any influence in supplying the islands 

 with a resident fauna. 



I have pointed out in the past that the presence of Amphis- 

 baena upon St. Thomas was extremely significant and I have 

 always had a feeling that other typically Greater Antillean 

 genera would be found to occur among these islands if artificial 

 changes had not already too greatly depleted the fauna. This 

 belief was responsible for Peters' visit, this and the desire to 

 secure Anoles from Tortola to try if possible to settle the status 

 of the much bandied-about Anolis richardii of Dumeril and 

 Bibron. I can not begin to express the great pleasure I ex- 

 perienced when I found that Peters had a Bufo from Virgin 

 Gorda and a Cyclura from Anegada. It is no exaggeration to 

 say that these are as significant as any herpetological finds made 

 in the Antilles in recent years. The fauna of the Virgin group, 

 of which only a part still persists, shows that it was truly Greater 

 Antillean and that the islands were beyond doubt connected 

 with a portion of the Greater Antillean land mass — that is with 

 the Cuba, Haiti, Porto Rico area — probably after the separation 

 of Jamaica, to the westward, and the Lesser Antillean land mass, 

 to the southeastward. Dr. G. M. Allen and Mr. Peters while 

 exploring a cave near Ciales in Porto Rico found several jaws 

 which I believe are beyond doubt those of a Cyclura, and Mr. 

 G. S. Miller, Jr., informs me that the U. S. National Museum 

 has received what he believes to be the bones of a Cyclura from 

 another nearby island. Peters heard of the seine upon one or 

 two islands, but was unable to secure any; he found snakes very 

 rare — fast disappearing. 



SAURIA. 



Sphaerodactylus macrolepis Giinther. 



In the collection there are specimens from St. Thomas, Tortola, Virgin 

 Gorda, and Anegada. These have been compared with a large series in 



