REPTILES 



MEASUREMENTS OF Tropidurus habeli. ALL ADULT. 



TROPIDURUS PACIFICUS Steindachner. 



Tropidurus (Craniopeltis) pacificus STEINDACHNER, Festschr. Zool.-bot. Ges. 



Wien, p. 313, pi. n, fig. 3, 1876. 



Leiocephalus pacificus GUNTHER, Proc. Zool. Soc., p. 67, 1877. 

 Tropidurus pacificus BOUL., Cat., n, p. 173, 1885, and Ann. N. H. (6), VII, 



p. 501, 1891. COPE, Proc. U. S. Nat. Mus., xn, p. 147, 1889. BAUR, 



Festschr. Leuckart, p. 270, 1892. 

 Tropidurus abingdonii BAUR, Biol. Centralbl., x, p. 477, 1890. 



Range. Galapagos Archipelago. Abingdon Island (Habel, 

 Petrel, Albatross 1888, Baur, Hopkins Stanford Expedition). 



Specific Characters. Scales small, 94 to 101 in circumference of 

 the body; dorsal scales little larger than the ventrals. Whole head 

 reddish in both sexes. 



Plates on top of head variable, the frontal small ; prefrontals usually 

 large, three or four in number; frontonasals two, the azygos plate be- 

 tween them and prefrontals small or wanting; prenasals not confluent 

 with internasals. Supra-oculars wide, five or six ; parietal bordered 

 by two large temporals. Scales on body small, those on dorsal surface 

 little larger than the laterals, equalling ventrals in size. Scales in cir- 

 cumference of body 94 to 101. Dorsal crest in male highest on tail, 

 height at nape one half internasal distance. 



Coloration in life of adult male, Cat. No. 4741, Stan. Univ. Mus. 

 Dorsum grayish-brown, the back crossed by several series of trans- 

 verse black bars, most distinct anteriorly, interrupted medially and on 

 sides. Dorsal crest and the scales at its base light greenish-gray; 

 dorsum, tail and limbs spotted with same. Top of head reddish- 

 brown, nape olive-brown. Fore limbs brownish, barred above like 

 the back. Tail becoming dusky toward tip, without lighter spots. 

 Chin and sides of mandible pinkish ; throat deep brown ; chest light 

 brown, dark-spotted, the scales with light margins ; fore limbs below 

 like chest, slightly more buffy. Belly, and hind limbs and tail infe- 

 riorly light olive-gray. Sides of head from snout to ear-opening red 

 shading into seal brown on neck. A black antehumeral spot. Sides 

 of body reddish, black-spotted. 



