420 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



mental; No. 10219 has four; the others all have three. The 

 mental may be as wide as, or a little wider than, long. 



Habits.— Mr. Slevin's field notes state: "Oct. 20, 1905. 

 Four geckos were taken near the iguana colony. Three were 

 under lava blocks, and one in an old cactus stump. Oct. 24. 

 Went ashore for the morning, hunting geckos. Got three in 

 the interior, beyond the iguana colony. Found them all under 

 lava blocks." 



General remarks. — The Barrington Island gecko is inter- 

 mediate between Phyllodactylus leei of Chatham Island and 

 Phyllodactylus galapagoensis. It agrees with the latter species 

 in the number of its postmental plates, but approaches the 

 former in the reduction of the enlarged dorsal tubercles. 



Phyllodactylus galapagoensis Peters. Galapagos Gecko. 



Phyllodactylus galapagoensis, Peters, Monatb. Berl. Ac. 1869, p. 720, 

 (type locality Galapagos Islands) ;^ Steindachner, Festschr. Zool-bot. 

 Ges. Wien, 1876, p. 329; Garman, Bull. Essex Inst., XXIV, 1892, p. 81; 

 Heller, Proc. Washington Acad. Sci., V, 1903, p. 63. 



Diagnosis. — Limbs without enlarged tubercles; back with 

 distinct rows of enlarged tubercles ; no median series of broad 

 subcaudals ; large dorsal tubercles set close together in the rows, 

 in six or rarely five rows on each side; snout shorter; two or 

 usually more postmentals touching mental; occiput with 

 enlarged tubercles ; tubercles of some dorsal rows continued on 

 neck anterior to insertion of fore limbs. 



Type. — Collected by Dr. Kinberg on Indefatigable, James, 

 or Albemarle. 



Distribution. — Indefatigable, James, Cowley, Brattle, and 

 Albemarle islands, Galapagos Archipelago. The subspecies 

 P. g. diincanensis and P. g. daphnensis occur on Duncan and 

 Daphne islands. 



Material. — This gecko was first secured by Dr. Kinberg, 

 who collected on Charles, Chatham, Indefatigable, James, and 



^ This specimen was secured by Dr. Kinberg, who collected reptiles on Charles, 

 Chatham, James, Indefatigable, and Albemarle Islands. Dr. Peters description enables 

 us to say that it did not come either from Charles or Chatham. 



