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



July 10, 1906. King and I visited the valleys on the north 

 coast. We saw numbers of iguanas scattered all about, but 

 none in colonies. They are still plentiful on this island, 

 despite the visits of the natives, who kill them for food. 



We did not see any young specimens. Ten eggs were 

 taken from one female and seven from another. They are 

 large, with white, leathery shells. The ten measure 51X77, 

 53X77, 54X75, 54X77, 54X79, 54X79, 54X80, 54X82, 56X 

 77, and 57X77 mm. Some of the other set measure 50X74, 

 51X75, 51X78, 52X78, and 53X73 mm. 



Amblyrhynchus crista tus Bell 



Sea Iguana 



Amblyrhynchus cristatus Bell, Zo'dl. Journ., II, 1825, p. 206, Supl., pi. 

 XII, and Zool. Beagle Rept., p. 23 ; Dum & Bibr., IV, 1837, p. 195 ; Dar- 

 win, Jour. Beagle, p. 466; A. Dum., Cat. Meth., Rept., p. 62; Steindach- 

 NER, Festschr., Zool-Bot. Ges. Wien, 1876, p. 316, pis. Ill, V, VI, VII; 

 GiJNTHER, Proc. Zool. Soc, 1877, p. 67; Boulenger^ Cat. Lizards, II, p. 

 185 ; Cope, Proc. U. S. Nat. Mus., XII, 1889, p. 147 ; Carman, Bull. Essex 

 Inst., XXIV, 1892, p. 79 (part) ; Heller, Proc. Wash. Acad. Sci., V, 1903, 

 p. 89. 



Oreocephalus cristatus Gray, Cat., p. 189, 1845. 



Iguana (Amblyrhynchus) cristatus Gray, Griff. A. K., IX, Syn., p. 37. 



Iguana {Amblyrhynchus) ater Gray, Griff. A. K., IX, Syn., p. 37. 



Amblyrhynchus ater Dum & Bibr., p. 196. 



Hypsilophus (Amblyrhynchus) cristatus Fitzinger, Syst. Rept., 1843, 

 p. 55. 



Hypsilophus (Amblyrhynchus) ater Fitzinger, Syst. Rept., 1843, p. 55. 



Amblyrhynchus cristatus var. ater. Garman, Bull. Essex Inst., XXIV, 

 1892, p. 8. 



Amblyrhynchus cristatus var. nanus Carman, Bull. Essex Inst., 

 XXIV, 1892, p. 80. 



Distribution. — This species is restricted to the Galapagos 

 Archipelago, where it has been collected at, or reported from, 

 the following islands : Culpepper, Wenman, Abingdon, Bind- 

 loe, Tower, Chatham, Hood, Gardner-near-Hood, Charles, 

 Champion, Enderby, Barrington, Indefatigable, South Sey- 

 mour, Daphne, James, Jervis, Duncan, Brattle, Narborough, 

 and on Albemarle at Bank's Bay, Tagus Cove, and Iguana 

 Cove. 



Material. — The present collection includes some one hun- 

 dred and eighty specimens, from Culpepper, Wenman, Abing- 

 don, Bindloe, Tower, Chatham, Hood, Champion, Indefati- 

 gable, James, Jervis, Brattle, Narborough islands, and Iguana 

 and Tagus coves on Albemarle Island. 



General remarks. — Careful comparison of the considerable 

 number of specimens at hand has revealed no constant differ- 



