16. PHTLLODACTTLirS. 81 



the distance between the eye and the ear-opening, once and a half 

 the diameter of the orbit ; forehead slightly concave ; ear-opening 

 rather large, narrow, obUque. Body and limbs moderate. Digits 

 slender, the distal dilatation large, triangular, the front margin 

 being straight ; the diameter of the dilatation of the fourth toe 

 equals two thirds the diameter of the eye ; the slender portion of 

 the digits with transverse lamellae inferiorly, about ten under the 

 fourth toe, the distal one divided. Snout covered with equal large 

 granules ; hinder part of head and temples with minute granules 

 intermixed with large ones ; the scales on the border of the eyelid 

 forming a rather strong denticulation. Rostral four-sided, twice as 

 broad as high, with trace of cleft above ; nostril pierced between 

 the rostral, the first labial, and three nasals, the anterior, or upper, 

 large and in contact with its fellow ; seven upper and seven lower 

 labials ; mental large, pentagonal, in contact with two chin-shields, 

 which are followed by others passing gradually into the granules of 

 the gular region. Back and limbs above with minute granules in- 

 termixed with large trihedral keeled tubercles ; on the back these 

 tubercles are arranged into pretty regular longitudinal series, ten 

 or eleven on each side of the vertebral line ; on the flanks these 

 tubercles are so close to each other as nearly to overlap. Lower 

 surfaces with moderate-sized imbricate smooth scales, in 22 longi- 

 tudinal series, and .53 transverse series between constriction of neck 

 and vent. Tail with small imbricate smooth scales intermixed with 

 larger slightly keeled ones forming rather indistinct verticils ; 

 inferiorly with a median series of transversely dilated scales. 



Head 18 miUim. 



Width of head 12 „ 



Body . . , 48 „ 



Fore limb 23 „ 



Hind limb 28 „ 



Tropical America. 



a. Ad. Tropical America. (Type.) 



5. Phyllodactylus spatulatus. 



Phyllodactylus spatulatus, Cope, Proc. Ac. Philad. 1862, p. 176. 



" Muzzle elongate, depressed, extending anterior to the orbit 

 once and one third the diameter of the latter. Frontal and nasal 

 regions closely squamulose tuberculous, each tuberole as large as 

 those that are scattered upon the occiput. Superior labials six, the 

 last minute ; inferior labials five. Symphyseal elongate campanu- 

 liform in outline, succeeded by three or four transverse series of 

 mental plates. The anterior is composed of three (median smallest), 

 which are much longer than broad ; the posterior are hexagonal. 

 About twenty-five rows of abdominal plates, and twenty rows of 

 elongate trihedral dorsal tubercles. Extremities coarsely tuber- 



