212 CTSTIGNATHrO^. 



24. Hylodes diastema. 



Lithodytes diastema, Cope, Journ. Ac. Philad. (n. s.) viii. 1876, 

 p. 155. 



Tougue obpjTiform, rounded behind. Yomerine teeth in two very 

 short transverse patches behind the choanae. Snout depressed and 

 narrowly truncate, with obtuse canthus rostralis ; the diameter of 

 the orbit equals the length of the snout ; nostril subterminal ; tym- 

 panum indistinct, with a diameter of less than half that of the eye- 

 sht; eustachian tubes minute. First finger shorter than second; 

 toes short ; disks of fingers and toes large. The hind limb being 

 carried forwards along the body, the tibio-tarsal articulation reaches 

 beyond the tip of the snout. Above dark brown ; darker brown 

 between the eyes, which is bordered with paler anteriorly ; below 

 pale brown. 



Panama. 



25. Hylodes surdus. (Plate XIV. fig. 3.) 



Tongue oval. Vomerine teeth in two small groups close together 

 behind the choause. Snout rounded, as long as the orbital diameter, 

 with distinct canthus rostralis ; nostril equally distant from the eye 

 and the tip of the snout ; interorbital space as broad as the upper 

 eyelid ; no tympanic disk ; eustachian tubes minute. Piugers 

 moderate, first shorter than second ; toes moderate, quite free ; disks 

 well developed ; subarticular tubercles moderate ; two metatarsal 

 tubercles, the outer rather indistinct. The hind limb being carried 

 forwards along the body, the tibio-tarsal articulation reaches between 

 the eye and the t\\) of the snout. Skin smooth ; belly slightly 

 granular. Dark brown above ; snout lighter ; a dark streak from 

 the tip of the snout through the eye to the shoulder ; three dark 

 streaks from the eye to the lip ; three chevron-shaped markings on 

 the back ; limbs with dark, light-edged cross bars ; hinder side of 

 thighs black, white-spotted ; throat and belly brown, marbled with 

 darker ; flanks and lower surface of hind limbs yellowish, marbled 

 with dark brown. Prom snout to vent 37 millim. 



Ecuador. 



a. 2 . W. Ecuador. Mr. Eraser [C.]. 



6. 2 . S. America. 



26. Hylodes glandulosus, 



Hylodes glandulosus, Bouleny. Bull. Soc. Zool. France, 1880, p. 47. 



Tongue subcircular, slightly nicked behind. Vomerine teeth in two 

 groups directed backwards, commencing from the inner hinder edge of 

 the choanae. Snout short, rounded, with distinct canthus rostralis; 

 tympanum hardly one third the diameter of the eye. Toes quite 



