

HERPETOLOGY OF PORTO RIOO. 



603 



Diagnosis. — Dorsal scales very large, as large as those on belly, 

 strongly keeled and imbricate; no granular scales on the vertebral line; 

 scales on breast smooth, a few on fore neck faintly keeled; about 34 scale 

 rows around the middle of the body; 8 dorsals in a head length (snout 

 to ear opening-); scales on top of head and temples strongry keeled, 

 imbricate, largest on snout and temples; loreals juxtaposed. 



Similar to Sph&rodacti/I ti.s macrolepis Gi'mther, but dorsal scales 

 much larger. 



Type.— U.S.N.M. No. 27007; Luquillo, Porto Rico; March 4, 1900; 

 L. Stejneger, collector. 



Habitat. — Vieques and Porto Rico. 



This Sphaerodactylus, of which we now possess a large series, dif- 

 fers in no other respect from typical S. macrolepis from St. Thomas 

 than in the size of the dorsal scales. 1 owe the opportunity of a direct 

 comparison with specimens of the latter to the kindness of Prof. S. 

 Garman. The Vieques and Porto Rican specimens agree completely, 

 and their difference from the St. Thomas form is sufficient to warrant 

 their separation b} T name. 



49 50 



Pigs. •ir.-oO.— Sph^rodactyiats gkandisquamis. 46, side of head; 47, top of head; 48, underside of 

 head. 2f x natural size. 49, scales on middle of back: 50, underside of hind foot. 4 x natural 

 size. No. 27007, U.S.N. M. 



Description of type specimen. — Adult; U.S.N.M. No. 27007; Lu- 

 quillo, Porto Rico; March 1, 1900; L. Stejneger, collector. Snout 

 rather pointed and elongate, the distance from the tip to the eye being 

 slightly longer than from the latter to the ear opening, and nearly 

 twice the diameter of the eye; rostral moderate with a long median 

 cleft behind; nostril between rostral, first supralabial, two small post- 

 nasals and a large supranasal which is separated from its fellow of the 

 other side by a small median scale, these three bordering the rostral 

 above; three large supralabials (on the left side, four on the right) to 

 the center of the eye; a prominent spine on the superciliary margin 

 over the middle of the eye; head above and on sides covered with 

 small elongate, strongly keeled scales, those on the snout largest; scales 

 on back large, imbricate, keeled, seven to eight in the distance from 

 tip of snout to ear; mental large, nearly same size as rostral; two 



