394 TEIID.A‘. 
two median rows larger ; all forming 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, 
Lota lengthier sda a eweee dis Cadaae 188 191 
Head oi iki acs arenas ee Sa ann Merete 14 17 
Width of head .................. 9 11 
From end of snout to forelimb .... 24 28 
From end of snout to vent ........ 54 71 
Fore limb... 0... cece eee ee 21 25 
FRA 6.20 aa panes aan asd nuedrs 32 38 
MPa ss fig epee ac Ae.” Meu laahe de tact lace 84 120 
Ecuador. 
29 Cet Mr. Buckley [C.]. (Types.) 
5. Prionodactylus vertebralis. (Prare XXI. fig. 2.) 
Cercosaura (Pantodactylus) vertebralis, O’Shaughn. Ann. & Mag. 
N. #, (5) iv. 1879, p. 298. 
Snout very short, body moderate. Prefrontals 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 widely separated by 
large gulars; a double longitudinal series of large transverse gulars ; 
collar-shields six. 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. our large preanals, 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 
