394 TEIID^. 



two median rows larger ; all fonniug regular annuli. Dark greenish 

 above ; the sides black, bordered inferiorly by a white streak from 

 the rostral to the hind limb ; fore limb anteriorly, and the three 

 inner digits, white ; a white spot on the fore part of the arm, near 

 the body ; hind limbs paler brown, with faint-coloured ocelli ; lower 

 surfaces whitish, the belly more or less spotted with bluish ; upper 

 surface of tail with a light zigzag band. 



millim. millim. 



Total length 138 191 



Head 14 17 



Width of head 9 11 



From end of snout to fore limb .... 21 28 



From end of snout to vent 51 71 



Fore limb 21 25 



Hindlimb 32 38 



Tail 84 120 



Ecuador. 

 l£i. ESn Mr. Buckley [C.]. (Type., 



5. Prionodactyliis vertebralis. (Plate XXI. fig. 2.) 



Cercosaura (Pantodactylus) vertebralis, O' Shauyhn. Ann. ^ Mag. 

 N. H. (5) iv. 187'J, p.^ 298. 



Snout very short, body moderate. Prsefrontals forming a short 

 suture ; interparietals longer than broad ; parietals broader than 

 long ; a small median occipital ; two large transverse postoccipitals ; 

 three supraoculars, anterior largest ; anterior supraciliary very large ; 

 nostril in the suture between two nasals, the posterior of which is 

 the largest ; two small loreals, the upper resting on the lower and 

 on the posterior nasal ; a small frenoorbital ; a row of small infra- 

 orbitals ; temples with large shields above ; six upper and five 

 lower labials ; chin-shields, one anterior and four pairs, the two 

 first of which form a suture, the two others widel}- separated by 

 large gulars; a double longitudinal series of large transverse gulars ; 

 collar-shields sis. Dorsal scales elongate hexagonal, strongly 

 keeled, scarcely imbricate, not mucronate; lateral scales small, 

 keeled ; thirty-seven scales round the body, including ventrals ; 

 thirty scales from occiput to sacrum inclusively. Ventral plates 

 quadrangular, in six longitudinal rows, median and outer rows 

 smaller, and twenty transverse rows. I'our large prseanals, in two 

 pairs, a small lateral on each side, and a small triangular one 

 wedged in between the large posterior pair. Limbs with large 

 shields ; lower surface of arms and hinder side of thighs granulate. 

 Six femoral pores on each side. Upper and lateral caudal scales 

 like the dorsals, lower larger and smooth. Dark olive above ; a 

 broad bluish black-edged band extends from the tip of the snout 



