164 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sek. 



Island species, but is quite distinct. It is still fairly common. 

 No difference has been noted between specimens from Hood 

 Island and those from Gardner-near-Hood. Five eggs taken 

 from a female on Hood Island, Sept. 26, 1905, measure 12X 

 20, 13X21, 13X22, 12X23, and 12X24 mm. They have 

 tough white, non-calcareous shells. 



Tropidurus grayii (Bell) 

 Charles Island Lizard 



1843, Leiocephalus grayii, Bell, Zoology Beagle, Rept., 1843, p. 24, pi. 

 XIII, fig. 1 (part) (type locality Chatham and Charles Islands, Gala- 

 pagos Archipelago) ; Gray, Cat. Lizards, 1845, p. 218 (part); Gunther, 

 Proc. Zool. Soc. Lond., 1877, p. 67 (part). 



? 1851, Holotropis grayii, Dumeril, Cat. Meth. Rept., 1851, p. 70 

 (part) ; Dumeril, Arch. Mus., VIII, p. 538 (part). 



1871, Craniopeltis grayii, Peters, Mon. Berl. Acad., 1871, p. 645 (part). 



1876, Tropidurus {Craniopeltis) grayii, Steindachner, Festschr. 

 Zool.-Bot. Ges. Wien, 1876, p. 310, pi. II, fig. 1 (part). 



1885, Tropidurus grayii, Boulenger, Cat. Lizards, II, 1885, p. 172 

 (part) ; Cope, Proc. U. S. Nat. Mus., XII, 1889, p. 145 (part) ; Baur, 

 Biol. Centralbl., X, 1890, pp. 478, 479; Boulenger, Ann. & I^ag. Nat. Hist, 

 (6), VII, 1891, p. 502 (part) ; Baur, Festschrift fiir Leuckart, 1892, p._ 265. 



1903, Tropidurus grayi grayi. Heller, Proc. Washington Acad. Sci., V, 

 1903, p. 69 (part). 



Diagnosis. — Sides of neck granular with numerous folds, 

 hind legs of males with definite dark spots; interparietal plate 

 seldom much broader than long; not more than eighty scales 

 around middle of body; 36 to 48 scales in crest; back with 

 very definite discrete rounded blackish spots; little or no red 

 in coloration. 



Types. — The original specimens were collected by Charles 

 Darwin in 1835 during the voyage of the "Beagle," and are 

 now in the British Museum. They were said to have been 

 collected in Chatham and Charles islands, but the description 

 is of the Charles Island species. 



Distribution. — This species appears to be restricted to 

 Charles Island and its neighboring islets, Gardner, Champion, 

 and Enderby. 



Material. — Besides the types collected by Darwin, this spe- 

 cies has been secured only by Kinberg and Dr. Baur. It ap- 

 pears to be nearly extinct on Charles Island, where Baur col- 

 lected his specimen. The Academy's collection contains fif- 



