16. HVLOEHIIfA. 251 



Vomerine teetli in two oblique oval groups on a level with the 

 hinder edge of the ohoana?. Snout subacuminate, as long as the 

 greatest orbital diameter ; interorbital space half the width of the 

 upper eyelid : tjTupanum two thirds the diameter of the eye. First 

 finger much longer than second ; toes moderate, fringed, with a 

 rudiment of web : subarticular tiibercles well developed ; a small 

 oval inner, and an indistinct outer metatarsal tubercle. The hind 

 limb being carried forwards along the body, the tibio-tarsal articu- 

 lation reaches beyond the tip of the snout. Upper surfaces covered 

 with flat warts ; lower surfaces smooth. Greyish olive above, 

 marbled with darker ; hind limbs cross-barred ; groin and hinder 

 side of thighs marbled with black. Male with a subgular vocal sac, 

 and blackish rugosities on the inner side of the first, second, and 

 third fingers. 



Uruguay. 



a. (S . Montevideo. 



16. HYLORHINA. 



Hvlorhiua, Bell, Zool. Beaqle, Hepf. p. 44 ; Giint/t. Cat. p. 23 ; Co^ye, 

 'Nat. Hist. JRev. I860, p.' 110, and Jovrn. Ac. PhiJad. (2) vi. 1866, 

 p. 95. 



Pupil erect. Tongue circular, free and entire behind. Vomerine 

 teeth. Tympanum distinct. Fingers and toes very long, the former 

 free, the latter webbed at the base ; tips of fingers and toes not 

 dilated. Outer metatarsals united. Omosternum cartilaginous ; 

 sternum with a broad bony stvle. Terminal phalanges simple. 



ChiH. 



1 . Hylorhina silvatica. 



Hylorhina silvatica, Gihith. Cat. p. 23. 

 Hylorhina sylvatica, BcU, I c. pi. 19. f. 1 ; Espada, Viaj. Pacif., 



Vertehr. p. 10. 

 Cystignathus seneus, Guichen. L c. pi. o. 



Vomerine teeth in a straight series on a level with the hinder 

 edge of the choanse. Snout short, rounded ; interorbital space as 

 broad as the upper eyelid ; tympanum very small. Fingers very 

 long, first shorter than second ; toes very long, webbed at the base 

 and sHghtly fringed ; subarticidar tubercles not much developed ; a 

 small, oval, inner metatarsal tubercle. The hind limb being carried 

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

 tip of the sno\it. Skin with small flat warts above, smooth beneath. 

 Uniform brown (discoloured). 



Chili. 



«, $ . ChUoe. C. Darwin, Esq. [P.]. (Type.) 



