Vol. 1] VAN DEN BURGH— GECKOS OF GALAPAGOS ARCHIPELAGO 427 



Distribution. — Charles, Gardner-near-Charles, Champion, 

 Enderby, Hood, and Gardner-near-Hood islands, Galapagos 

 Archipelago. 



Material. — Two specimens collected by Commander Cook- 

 son of the "Peterel" are in the British Museum. A single 

 specimen collected by the naturalists of the "Albatross," and 

 now in the U. S. National Museum, probably belongs to this 

 species. The type was secured by Dr. Baur in 1891. The 

 Hopkins-Stanford Expedition secured this gecko on Charles, 

 Hood, and Gardner Islands. This material, recorded by Hel- 

 ler, is in the collection of Leland Stanford Junior University. 

 The Academy's expedition secured over five hundred of these 

 geckos on Charles, forty-seven on Hood, forty-two on Gard- 

 ner-near-Hood, three on Gardner-near-Charles, and one each 

 on Champion and Enderby islands. 



Description of No. 9766 from Charles Island. Head elongate; snout 

 longer and more depressed than in Phyllodactylus galapagoensis, a little 

 more than one and three-fourths times as long as diameter of the eye; 

 ear-opening small, with anterior denticulation of three or four scales, about 

 as far as nostril from eye. Body and limbs moderate, somewhat depressed, 

 tail cylindro-conic. Snout covered with subequal, smooth, rounded gran- 

 ules. Hinder part of head, temples, neck, and back and sides of body 

 covered with smaller, smooth granules. No enlarged tubercles on limbs. 

 Occiput and anterior part of neck with no enlarged tubercles. Back, from 

 root of tail to posterior part of neck, with very distinct regular rows of 

 enlarged, keeled, trihedral or rounded tubercles. These large tubercles are 

 in five rows on each side of midline at middle of body. The tubercles in 

 each row are set somewhat irregularly, but usually are separated by from 

 two to four small dorsal granules, although sometimes only one granule 

 intervenes. Rostral much broader than high. Nostril between rostral, 

 first labial, and three nasals of which the upper is largest and is in contact 

 with its fellow of the opposite side. Eight or nine upper, and seven or 

 eight lower labials. Mental large, a little broader than long, bordered 

 behind by two postmentals, which are followed by polygonal shields which 

 gradually pass into the smaller gulars. Lower surface of body covered 

 with smooth, imbricate scales, which change gradually into the granular 

 laterals and gulars ; about thirty to thirty-five longitudinal, and seventy to 

 seventy-five transverse series. Tail covered with whorls of small imbricate 

 scales, feebly keeled on the dorsal surface of the base of the tail, elsewhere 

 smooth, no inferior median series of broad plates. Limbs without enlarged 

 tubercles ; digits rather slender, distal pads large, truncate ; about eleven 

 lamellae under fourth toe. 



The general color above is brownish gray, spotted, dotted, and blotched 

 with dark brown on the limbs, head, neck, body, and tail. These dark 

 markings form seven cross-blotches on each side of the midline, where they 

 are interrupted. A dark streak runs from the nostril to the eye, and from 

 the eye to the side of the neck, passing just above the ear-opening. The 

 labials are spotted with dark brown. The lower surfaces are yellowish 

 white, with a brownish suffusion formed by minute dark dots. 



