4 Stejneger New Species of Gecko, 



Snout moderately pointed, longer than the distance between the eye and 

 the ear-opening, about once and two-thirds the diameter of the eye; ear- 

 opening small, not larger than the discs of the fingers, pear-shaped, hori 

 zontal; rostral moderately large with a cleft in the posterior margin, in 

 which is a small median scale; nostril between rostral, first supralabial, 

 a rather large supranasal, and a small poslnasal; supranasals separated by 

 two flat hexagonal scales on a line behind the rostral and the small 

 median scale; four large supralabials to below the center of the eye, 

 followed by two small ones, first very long; three large lower labials 

 corresponding to the four large supralabials, followed by two smaller 

 ones, first being as long as the first two supralabials combined; mental 

 large, truncate posteriorly; behind the mental and adjoining the lower 

 labials, large flat scales decreasing in size posteriorly and passing gradu 

 ally into the granules of the throat; upper surfaces covered with small 

 juxtaposed, granular scales slightly smaller than those on the flanks and 

 keeled, those on the occiput being exceedingly small; the scales on the 

 frontal region somewhat elongate, those on the snout considerably larger, 

 irregularly polygonal, flat but distinctly keeled; a pointed horn-like 

 scale on the superciliary edge a little anterior to the center of the eye; 

 ventral scales rather large, imbricate; tail cylindrical, tapering, covered 

 above with irregular flat scales somewhat smaller than the ventrals, 

 with scarcely any indication of verticels; tail below with a median series 

 of dilated shields except at base which is covered by large flat imbricate 

 scales. 



Color (in alcohol) brownish; a pale band extending from the nostril 

 through the upper part of the eye and backwards along the side of the 

 neck communicating with that of the other side in two places across the 

 upper neck; this band can be traced as a very irregular series of pale 

 marblings along the sides of the body; a fairly well-defined dusky band 

 borders this pale one below and across the upper neck, and is in turn 

 bordered below by a pale line on the temples; top of head with ill-defined 

 longitudinal pale marblings the continuation of which may be traced as 

 an irregular pale median dorsal band; tail similarly colored; underside 

 pale, indistinctly mottled with darker brownish. 



Dimensions (in millimeters). Type: total length, 82; snout to ear- 

 opening, 11; width of head, 6.5; snout to vent, 47; vent to tip of tail, 35; 

 fore limb, 14; hind limb, 18. 



Variation. The four additional specimens sent (U. S. N. M. 31058-61) 

 agree in structural characters very well with the above, except that in 

 none of them is the underside of the tail covered with enlarged cross 

 plates. In No. 31061 the tail is also somewhat longer than the distance 

 from snout to vent. The coloration is also essentially alike, except that 

 in 31059 the longitudinal bands are better defined and more regular, 

 especially on the posterior portion of the body; the underside in all is 

 uniformly pale. 



Remarks. This species seems to be most nearly related to Sphcerodac- 

 tylus lineolatus from Central America, from which it differs, among 

 other things, in having the upper head scales keeled. 



