Lizards in the British Museum. 299 



temporals. Nostrils anteriorly in a large nasal plate, behind 

 which are two pentagonal frenals. Lower eyelid with a trans- 

 parent disk. Supralabials 6 ; infralabials 5 ; submental broad, 

 followed by two pairs of large contiguous postmentals; a double 

 series of very broad plates occupies the centre of the throat to 

 the collar, the sides being granular. Scales of the back very 

 narrow, elongate, keeled, with triangular points in front and 

 behind, closely fitting, in 14 longitudinal and 31 transverse 

 series from occiput to root of tail ; scales similar to those of 

 the dorsal series descend almost to the ventral plates in the 

 middle of the body, the rest of the lateral region in front and 

 behind being granular like the sides of the neck. Ventral 

 shields in 6 longitudinal series, those of the 4 inner being 

 very broad, of the two external smaller, in 22 transverse rows. 

 Prgeanal scutes 2, 2, like those of the belly — a small triangular 

 one, with the apex wedged in between the two preceding 

 scutes, completing the pramnal border. Tail with scales con- 

 tinued in series like those of the back and belly. 



A broad bluish-white or cerulean stripe extends from the tip 

 of the snout to the extremity of the tail, with a narrow black 

 border on each side along its whole length. Entire upper sur- 

 face on either side of the stripe and sides of the body olive-brown, 

 taking in the supraorbital and temporal regions of the head, 

 which are sharply defined against the central stripe. A nar- 

 row white stripe along the supralabials to the armpit. A 

 series of small white ocelli surrounded by black rings from 

 the ear along the whole side of the body and tail ; two lower 

 series of smaller similar ocelli between the fore and hind 

 limbs. A conspicuous white ocellus at the junction of the 

 forearm and the chest, another in the middle of the forearm, 

 and a third on the elbow ; some ocelli also on the hind limb. 

 Lower surface bluish, sprinkled with blackish. 

 This species, remarkable for its coloration, is most closely 

 allied to Cercosaura (Pantodactylus) argulus, Peters, I. c. p. 184. 

 Amongst other differences the latter has only a single 

 frenal, and the internasal is divided into two plates. 



The type specimen in the British Museum is from Intac, 

 Ecuador. 



millim. 



Distance of snout from eye 3 



„ „ ear-ooenmg 8| 



„ „ fore limb 15 



„ „ vent 33 



Length of fi ire limb 12 



,, third front toe 3 



„ fourth front too 4£ 



„ hind limb 16 



,, fourth hind toe 6 



