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



left in the colony. Judging from the number of burrows one 

 may safely say there were at one time as many as a thousand 

 in this colony. The survivors keep well in the brush, and 

 when once they start running do not stop until they get into 

 a burrow. Mr. Beck found a few more iguanas at the end of 

 a valley running along the foothills. April 7, 1906. — King 

 and I secured an iguana near the foot of the mountain oppo- 

 site Tagus Cove. He evidently was a stray one, as no other 

 signs of them were seen so far to the north. They do not, 

 however, any longer live in colonies. The one secured was a 

 male. He allowed us to approach fairly near, but went fast 

 when we chased him, and finally was caught in a hole in the 

 lava. He was shedding his skin. 



Bank's Bay, Albemarle Island, April 9, 1906. — Large num- 

 bers of deserted iguana burrows were seen all over the level 

 country. 



Narborough Island, April 6, 1906. — Land iguanas are com- 

 mon. They are brightly colored yellow and red. They live 

 in cracks in the lava. No colonies of burrows were observed. 

 April 17, 1906. — We made a landing on a slope of cinders 

 and lava, over which we climbed to the top and reached a 

 plateau with some vegetation and a little soil, the country be- 

 ing mostly broken lava of a reddish color. This plateau 

 extended about two and a half miles to the base of the moun- 

 tain. Here we found iguanas scattered over the lava. They 

 were wild and had to be shot. All were of a uniform color, 

 males and females, brick reddish body and tail, head bright 

 yellow, and lower surfaces light-yellow. A few burrows were 

 seen, but most of the iguanas here live in holes in the lava. 

 The stomachs of those examined all contained Scalesia, a plant 

 growing some two feet high, and scattered abundantly over 

 the surrounding country. The females taken had no enlarged 

 ovaries, and their breeding season is possibly over. Males 

 and females were about equally common. 



Conolophus pallidus Heller 

 Barrington Island Land Iguana 



Conolophus subcristatus, Garman, Bull. Essex Inst., XXIV, 1892, p. 77 

 (part). 



Conolophus pallidus, Hbxler, Pros. Wash. Acad. Sci., V, 1903, p. 87. 



