HEEPETOLOGY OF PORTO RICO, 



603 



Diagnosh. — Dor.sal scales very large, as lar^•(^ 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; al)out 3-1 scale 

 rows around the middle of the ])ody; 8 dorsals in a head length (snout 

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

 iml)ricate, largest on snout and temples; loreals juxtaposed. 



Similar to SpJu^rodactyhis inacroleph Giinther, but dorsal scales 

 much larger. 



r^/^^e^.— U.S.N. M. No. 27007; Luquillo, Porto Rico; March 4, 1900; 

 L. Stejneger, collector. 



IlaJy'dat. — Vieques and Porto Rico. 



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

 fers in no other respect from typical S. macrolejns 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 by name. 



Pigs. 4(')-50. — Sph^rodactylus grandisquamis. 40, side of Iiead; 47, top of head; 48, underside of 

 head. '1\ x natural size. 49, scales on middle of back; .50, underside of hind foot. 4 x natural 

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



Demrlption, of ty2)e sj)eciinen. — ^Adult; U.S.N.M. No. 27007; Lu- 

 quillo, Porto Rico; March 1, 11)00; 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 Iwrdering the rostral 

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

 the center of the ej^e; a prominent spine on the superciliary mai-gin 

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

 small elongate, strongl}^ 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, nearl}'^ same size as rostral; two 



