STEJNEGER: LIZARDS FROM COCOS AND MALPELO ISLANDS. 163 



scarcely an indication of verticels, those on the lower surface nearly twice as 

 large as those above ; a pair of enlarged post-anal scales. Color of live speci- 

 men (according to the sketch of Mr. Magnus Westergren, the artist of the 

 expedition) : top and sides of head and neck uniform sooty black gradually 

 merging into the ground color of the upper surface of body, which is " Van- 

 dyke " brown, sprinkled with minute dots of an ochraceous buff; upper sur- 

 face of limbs as well as alternate cross-bands on tail similarly colored ; the 

 hands and feet as well as the intervals between the crossbands pale " Xile " 

 blue ; end of snout, lips, and entire under side similarly bluish white. In 

 alcohol the ground color is more blackish and the dots less yellowish. 



Dimensions. 



Total length 271 mm. 



Snout to ear-opening 26 " 



Snout to vent 101 " 



Tail from vent 170 " 



Fore limb 50 " 



Hind limb . , 90 " 



Tibia 26 " 



Variation. — A large full-grown female (No. 22103) differs from the male 

 described above only in the absence of enlarged post-anal scales. Two some- 

 what younger specimens (female, No. 22104, male, No. 22105) differ from 

 the fully adult specimens chiefly in the lesser elevation of the cephalic crests 

 and the total absence of the cervico-nuchal Hap ; the color of the back, which 

 seems to be identical with that of the adults, extends also over the upper 

 surface of neck and head. 



Remarks. — Mr. Charles H. Townsend, who collected these specimens in 

 Malpelo, informs me that they were running over the rocks near the water. 

 The island was too steep to afford a landing, but the lizards were shot off or 

 whisked off the face of the cliffs, thus falling into the water, whence they 

 were secured by the collector. 



Anolis townsendi,^ sp. nov. 



Diagnosis. — Tail subcylindrical ; dorsal scales but indistinctly larger than 

 those on the flanks, those on the vertebral region keeled ; gular and ventral 

 scales keeled ; digital expansion strongly developed ; occipital scale larger than 

 ear-opening, separated from supraorbital semicircles by two or three scales, the 

 semicircles separated by a similar number of scales ; scales on upper surface of 

 snout as well as enlarged supraoculars keeled ; anterior half of superciliary 

 ridge with three very long and narrow, strongly keeled scales placed obliquely ; 

 no markedly enlarged series of scales below infralabials ; tibia measuring more 

 than two thirds the length of head, slightly shorter than distance between end 

 of snout and ear-opening ; the adpressed hind limb reaches beyond the eye ; 

 tail more than once and a half as long as head and body. 



1 Named in honor of Mr. Charles H. Townsend. 



