236 SPHAERODACTYLUS. 



Dimensions: — Total length 43 mm. 



Tip of snout to vent 22 mm. 



Vent to tip of tail 21 mm. 



Width of head 4 mm. 



Fore leg 6 mm. 



Hind leg 8 mm. 



Remarks: — The only two specimens of this lizard which I have ever seen 

 are the two types discussed. They were found the same day vmder loose stones 

 on a dry, rather open, scrubby, hillside pasture. This species is more slender 

 than torrei and is much larger with a less acuminate snout than elegans; it differs 

 likewise in colouration. The two specimens in hand are exactly alike in pattern. 



7. Sphaeeodactylus pacificus Stejneger. 

 Plate 1, fig. 3; Plate 13, fig. 1^. 



Sphaerodactylus pacificus Stejneger, Proc. Biol. soc. Wash., 1903, 16, p. 3. 



Type-locality: — Cocos Island, western coast of Costa Rica. 



Types:— Type. U. S. N. M. 31,057, P. Biolley. Four Paratypes. 



Distribution: — The type-locality. 



Diagnosis: — Large, very stockily-built, with tiny keeled granular dorsals 

 about twenty-three or twenty-four of which equal the distance between tip of 

 snout and centre of eye; having two scales separating the large supranasals 

 and anterior to this pair a single small scale wedged in the posterior cleft of the 

 rostral. Ear-opening horizontal. 



Description:— Faratyfe (U. S. N. M. 31,058). M. C. Z. 13,727. Snout 

 not conspicuously pointed, a little longer than distance from eye to car, about 

 once and two thirds the diameter of eye; nostril small between rostral, first 

 labial, a large supranasal, and one or two very small scales; rostral large, cleft 

 above, the cleft including the small scale anterior to the pair separating the 

 supranasals; four supralabials to below centre of the eye; the usual supraorbital 

 spine present; top of head covered with small keeled granules some\\hat larger 

 and flatter on the anterior portion of the snout; back covered with minute 

 keeled, granular scales which .show a slight tendency to imbricate ; about twenty- 

 three or twenty-four equalUng distance of tip of snout from the centre of the eye; 

 ventrals enlarged and imbricate; tail cylindrical, tapering, covered above with 

 irregular flat pavement-like scales smaller than ventrals; tail without median 



