318 



BTTPONID^. 



Oxyrhynchus typhonius, Espada, Viaj. Pacif., Vert. p. 171. 



proboscideus, Espada, I. c. p. 178. 



iserni, Espada, I. c. p. 185. 



Upper view of head. 



Head regularly triangular, the angles of the maxillariea formin" 

 a more or less prominent point on each side ; crown on each side 

 with an enormous, erect, sharp bony ridge from the orbit to the 

 parotoid, in the adult ; this ridge scarcely developed in the young ; 

 a more or less distinct parietal ridge ; snout "prominent, pointed ; 

 interorbital space much broader than the upper eyelid ; tympanum 

 more or less distinct, about two thirds the width of the eye. First 

 finger not extending beyond second ; toes half or two-thirds webbed, 

 with simple subarticular tubercles ; two moderate metatarsal tuber- 

 cles ; no tarsal fold. The hind limb being carried' forwards along 

 the body, the tarso-metatarsal articulation reaches the eye or a little 

 beyond. Skin covered with small warts ; parotoids rather small, 

 snbtriangular, oblique ; a lateral fold formed by a series of large 

 conical warts. Brown above, with a few black spots ; frequently a 

 light vertebral line ; beneath immaculate or spotted. Male with a 

 Bubgular vopal sac. 



S. America. 



a. Skeleton. 

 b-d. Hgr. & yg. 



e-g. Hgr. 

 h. Hgr. 

 i. ?. 

 h-p. Hgr. 

 q. Hgr. 

 r. $. 



s. 2. 

 t. 2. 

 u. 2- 



V. Several spec, 

 2 & hgr. 

 2 & hgr. 



to, 



JDayenne. 



Vryheids Lust, Dutch 



Guiana. 

 Santarem. 

 Saiitarem. 

 Para. 

 Para. 

 Brazil. 

 Pebas. 



W. Ecuador. 

 Guayaquil. 

 Canelos, Ecuador. 

 Oayaria. 



Tropical America. 



Mr. Wickham [0.1. 

 E. Graham, Esq. [P.]. 



(Type of B. ocellatus.) 



Mr. Eraser [0.1. 

 Mr. Eraser [0.1. 

 Mr. Buckley [0.1. 

 W. Davis [0.], Messrs. 



Veitch [P.]. 

 H.W. Bates [0.]. 



