11^ MR. G. A. BOULENGEB ON HEPTILES ASD [Feb. 15, 



or semidivided ; loreal twice or twnce and one thii-d as long as 

 deep, bordering tlie eye ; a small prseocular usually present between 

 the loreal and the supraocular ; t\AO postoculars, rarely one ; 

 temporals 2 + 2 or 3 ; seven upper labials, fourth or fourth and 

 fifth entering the eye ; first lower labial in contact with its fellow 

 behind the symphysial ; three or four pairs of chin-shields, anterior 

 as long as broad. Scales in 15 rows, vertebrals strongly enlarged, 

 the largest twice as broad as long. Ventrals 148-160 ; anal 

 entire • subcaudals 60-1 6. Ohve-brown above, regularly marked 

 with black ellipses with lighter centres disposed vertically on each 

 side of the body, the two series alternating ; head spotted or 

 marbled with black; lower parts whitish, speckled aud largely 

 spotted with black. 



Total length 645 millim. ; tail 145. 



Several specimens from Ibarra. 



VlPEEIDvE, 



47. Lachesis ateox L. 

 Paramba and Chimbo. 



48. Lachesis lansbeegii Schleg. 

 Paramba. 



49. Lachesis schlegelii Berth. 

 Chimbo. 



BATEACHIA. 



Ecaudata. 



Rajsid^. 



1. Phtllobates infkagcttatus, sp. n. (Plate XIV. fig. 1.) 



Snout rounded, moderately prominent, as long as the diameter 



of the orbit ; loreal region vertical ; nostril slightly nearer the tip 



of the snout than the eye ; intei'orbital space a little broader than 



the upper eyelid ; tympanum distinct, close to the eye and three 



fifths its diameter. Fingers moderate, first not extending beyond 



second ; toes moderate, free ; disks well developed, smaller than 



the tympanum ; two small metatarsal tubercles, inner oval, outer 



rounded ; a short, curved, tarsal fold. The tibio-tarsal articulation 



reaches the eye. Skin perfectly smooth. Blackish brown above, 



with a more or less distinct lighter greyish streak on each side 



from eye to groin, another on each side of the snout along the 



loreal region, and a third along the back of the thigh ; throat aud 



belly blackish brown with round white spots. 



Prom snout to vent 23 millim. 



Two specimens from Chimbo. 



2. Prostheeapis pemoealis Blgr. 

 Paramba and Cachabe. 



