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



crater as yet, but Mr. Beck says they were not more abundant 

 there than elsewhere. Aug. 14, 1906. Went ashore after 

 hzards. I found them by no means abundant — if anything 

 rather scarce. I cohected on the N.E. slope of the island to 

 about 800 feet. The Tropidiiri are -very wild, and keep close 

 under cover. They generally were found under the thorn 

 bushes or on piles of old lava, under which they get on one's 

 approach. Secured about thirty during the day. Aug. 15. 

 Went down into the large crater at the north end of the island. 

 The floor of the crater is 450 feet above sea-level and is com- 

 posed of red loam covered with large thorn bushes and old 

 stumps. The vegetation is thickest around the edges, while 

 the central portion is almost bare. Lizards were the only 

 reptiles seen, and were more plentiful there than elsewhere, 

 but by no means abundant. The numerous hawks make them 

 wilder than those of any other island where we have collected, 

 except Charles Island. Some of the males have a rich salmon, 

 coloring, but I find little or no difference between those taken 

 in the crater and those taken outside, although the color of 

 their surroundings in the crater is quite red. In several stom- 

 achs examined I found portions of beetle wings and grass- 

 hoppers. The latter seem to form one of the principal articles 

 of food, for I saw several lizards chasing them. I saw quite 

 a number of young, and presume the breeding season has not 

 been over very long. 



"Their food consists exclusively of insects. The stomachs 

 examined contained grasshoppers, caterpillars, grubs, beetles, 

 etc." (Heller.) 



General remarks. — The small size of its scales causes this 

 species to bear a general resemblance to the Tropidurus of 

 Abingdon Island. The coloration, however, is very different: 

 the Duncan lizards are the reddest of the Tropiduri, while the 

 Abingdon species is of a bluish-gray tone. The Duncan lizard 

 does not show the speckled head so characteristic of the 

 Abingdon form. The scales on the belly of Duncan specimens 

 are smaller than in any other species. 



Tropidurus habelii (Steindachner) 



Bindloe Island Lizard 



1876, Tropidurus paciUcus (var. habelii), Steindachner, Festschrift 

 Zool.-Bot Ges. Wien, 1876, p. 314, pi. II, fig. 2 (type locality Inde- 

 fatigable [?] and Bindloe Islands, Galapagos Archipelago). 



