FROM THE CAYMANS AND THE BAHAMAS. Ill 



labials six to seven, five to below the centre of the eye, 

 third longest ; lower labials five, third and fourth longest ; 

 mental moderate ; a single anterior subraental followed by 

 five pairs, the first two or three of which are in contact 

 with the lower labials. Gular fold with five or six trans- 

 verse series of enlarged granules. Dorsal scales small, 

 hexagonal, uniform ; laterals smaller ; ventrals in ten series, 

 outer half as wide as the second, about thirty-five in a 

 row from chest to preanals. A pair of large preanals ; in 

 front of them a single one, and in front of it another, or a 

 pair of smaller ones. A series of six or seven moderate 

 brachials ; six or seven broad antebrachials, in a single row. 

 Femoral pores twenty-four. Upper caudals keeled, low- 

 er smooth. 



Back black, with a yellow line of five or six scales in 

 width from the supraciliaries on each side of the black 

 vertebral band of about ten scales, and another line of yel- 

 low on each flank at the edges of the ventrals, starting 



O 7 O 



from the ear. Head, lower surfaces, limbs and tail oliva- 

 ceous ; head and throat tinted with yellow. 



IV. EUM KEY. 

 SPH^ERODACTYLUS CORTICOLUS sp. n. 



Snout moderate, pointed, as long as the distance be- 

 tween the eye and the ear, about one and one-fourth times 

 the length of the orbit. Ear opening very small, oval, 

 vertical. Rostral large, longitudinally cleft above. La- 

 bials four ; lower labials four, anterior nearly as long as 

 the two above it ; posterior of each series very small. Men- 

 tal large, truncate posteriorly and in contact with two 

 moderate sized scales behind which are smaller ones, de- 

 creasing in size to the granules of the throat. Two larger 

 interuasals and a median small one. Head covered with 



