Vol. II, Pt. I] VAN DENB URGH—SLEVIN—GALAPAGOAN LIZARDS 189 



this region dark olive; but a few from Seymour are colored 

 like those from Narborough. 



Variation. — The supralabials are 9 to 13 (Seymour 9-13, 

 Narborough 9-13, Albemarle 11), the usual number being 

 eleven. The femoral pores are 20 to 27 (Seymour 20-24, 

 Narborough 20-27, Albemarle 21-22). The rostral is twice 

 as broad as high in thirty-one per cent of the specimens from 

 Seymour, seventy-five per cent of those from Narborough, and 

 fifty per cent of those from Albemarle; being less than twice 

 in all the other specimens. The large spines of the crest 

 usually begin nearer the skull in Seymour specimens than in 

 those from Narborough. 



Field Notes. — South Seymour Island, Nov. 21, 1905. — 

 Land iguanas are common, and are scattered all about, not 

 living in colonies like those on Barrington Island. There are 

 a few burrows, but most of the iguanas live in the broken 

 lava. Some are red like the lava, and others are dark olive 

 above. The under surfaces of body and legs are yellow, and 

 the head is light yellow. The males here are very large. I 

 saw one large male eating on a cactus, and our mate, Mr. 

 Nelson, said that one came and drank the blood of a goat he 

 had shot. July 26, 1906. — Found iguanas common, the males 

 predominating. They have taken on a blackish color now, 

 and are not so brilliant as on our former visit. Several stom- 

 achs examined were found to contain cactus and the leaves 

 of a shrub (Maytenus) which resembles a scrub oak. 



Indefatigable Island, Oct. 25, 1905. — Just back of the beach, 

 on the side of the island near Barrington, we found the de- 

 serted burrows of what must at one time have been a large 

 colony of land iguanas. The species seems now to be extinct 

 on this island. 



James Island, July 28, 1906. — No iguanas were seen, but 

 I found some bones in a crack in the lava on the coast opposite 

 Bartholomew Island. 



Tagus Cove, Albemarle Island, March 23, 1906. — Beck re- 

 ports seeing about six land iguanas, of which he secured one. 

 They are extremely wild. He noticed one very large brightly 

 colored male. The one taken was a female in the act of 

 shedding its skin. March 24, 1906. — I saw only one iguana 

 today. They are very rare; probably only six or eight are 



