REPTILES 87 



Our material consists of four adult specimens from Narboro and 

 seven from South Seymour. The coloration of the two series shows 

 scarcely any constant differences, but there is considerable individual 

 variation. 



Coloration in life of adult male, Cat. No. 4787, Stan. Univ. Mus., 

 from Narboro, March, 1899. Superior and inferior labials, oculars 

 and sides of snout to level of nostrils lemon ; head above orange with 

 spots and blotches of whitish ; neck, lower jaw and throat dirty whit- 

 ish ; dorsum upper surface of limbs and tail brick red ; lower parts, 

 excepting tail posteriorly, chrome; tail posteriorly lighter brick red ; 

 dorsal crest on nape lemon, on dorsum brick ; tympanum lemon with 

 a bluish semicircle ; iris ochraceous and silvery ; claws light brownish- 

 yellow. 



An adult female, Cat. No. 4489, Stan. Univ. Mus., same locality 

 and date, was similar in coloration to the male but dorsum much 

 darker, maroon rather than brick, black-blotched ; no white on head 

 above ; whitish of throat extending on breast to beginning of belly ; 

 drab blotches on rump, hind limbs and tip of tail ; fore limbs chrome 

 above, not like dorsum ; legs and tail black-spotted like dorsum. 



CONOLOPHUS PALLIDUS sp. nov. 

 Conolophus subcristatus CARMAN, Bull. Essex Inst., xxiv, p. 5. 1892 (part). 



Type. Adult female, Cat. No. 4749, Stan. Univ. Mus. ; Barring- 

 ton Island, Galapagos Archipelago, May, 1899. 



Range. Galapagos Archipelago ; Barrington Island (Baur, Hop- 

 kins Stanford Expedition). 



Specific Characters. Coloration above, clay yellow, below, whit- 

 ish ; rostral plate broad, height more than twice the length, bordered 

 above by eight scales ; snout less than twice in length of head from 

 ear-opening ; height of mental twice in the width. 



Description of the Type. Head short, occipital region highest, 

 depressed anteriorly at occipital plate; interorbital flat; profile of 

 snout convex. Head widest between ear-opening and angle of jaws, 

 width one and one third in the length. Ear-opening broadly oval, a 

 little larger than the eye, bordered by small scales. Nostrils large, 

 circular, perforating a single raised plate, nearer snout than eye ; dis- 

 tance from snout to center of nostril equal length of rostral plate. 

 Head covered above by keeled convex scales, those on occiput strongly 

 conical ; occipital plate not much enlarged ; supraoculars small ; 

 scales anterior to nostrils without keels. Rostral plate large, broadly 

 pentagonal, height more than twice in the length, bordered above by 



