Bafrachians and Reptiles. 397 



Atclopus tricolor. 



Habit slender. Head longer than broad, about half as 

 long as the trunk, sides vertical; snout very prominent, 

 truncate, longer than the eye ; nostril nearer the tip of the 

 snout than the eye; interorbital space much broaJer than 

 the upper eyelid. Fore limb rather slender ; fingers webbed 

 at the base, first very short ; toes nearly entirely webbed ; 

 no metacarpal, metatarsal, or subarticular tubercles. The 

 tibio-tarsal articulation reaches the eye or between the eye and 

 the tip of the snout. Skin smooth. Black above, with 

 round yellow spots, a yellow streak on each side of back from 

 eye to groin, and a yellow streak round the upper lip ; lower 

 parts yellow, with black marblings on the sides and under 

 the limbs and sometimes a few round black spots on the 

 belly ; axillary and inguinal regions and palmar and plantar 

 surfaces bright vermilion. 



From snout to vent 21 millim. 



Several specimens from the Marcapata Valley, E. Peru, 

 collected by Mr. Ockenden. 



ProstJierapis hoUvianus. 



Snout short, truncate, with angular canthi and nearly 

 vertical lores; nostril a little nearer the tip of the snout than 

 the eye; interorbital space broader than the upper eyelid; 

 tympanum distinct, two thirds thediameter of the eye. First 

 and second fingers equal ; toes quite free ; disks of fingers 

 and toes small ; two metatarsal tubercles, inner oval, outer 

 round. The tibio-tarsal articulation reaches the eye. Skin 

 smooth, somewhat granular on the back. Dark grey-brown 

 above, black on the sides of the head and body ; a white line 

 borders the upper surface of the head, along the supraciliary 

 edge and round the snout, and extends along the side of the 

 body to the groin ; another borders the upper lip and extends 

 to the fore limb ; sides of limbs and lower parts white, spotted 

 or marbled with black. Male with an internal vocal sac. 



From snout to vent 26 millim. 



Two specimens from San Carlos, Bolivia, 1200 m., and 

 one from S. Ernesto, Bolivia, 800 m. Collected by P. O. 

 Simons. 



Lwhenius irojyidonotus. 



Nostril supero-lateral. Upper head-scales small, smooth ; 

 two longitudinal series of scales on the frontal region ; inter- 



