■i. CYCLOKHAJirnUS. — 5. CALYPTOCEPUALrS. 189 



4. CYCLORHAMPHUS. 



Cycloiliamphus, Tschudi, Batr. p. 81. 

 Cyclorhampliiis, sp., Dum. ^- Bibr. viii. p. 45:2. 



Pithecopsis, (Bibr.) Giinth. Cat. p. 22 ; Cope, Nat. Hid. Ilcv. 1865, 

 p. 112, and Journ. Ac. Philad. (2) yi. 1860, p. 93. 



Pupil horizontal ? Tongue oval, entire and free behind. Vome- 

 rine teeth. Tympanum hidden. Fingers free ; toes webbed, the 

 tips not dilated. Outer metatarsals separated. Omostcrnum carti- 

 laginous ; sternum a cartilaginous plate. Terminal phalanges 

 simple. 



Brazil. 



1. Cyclorhamphus fuliginosus. 



Pithecopsi.s fuliginosus, Gimth. Cut. p. 22. 

 Cyclorhamphus fuligiuosus, {Bibr.) Tschudi, Batr. p. 81 ;'i'««(. &f 

 Bibr. p. 454. 



Vomerine teeth in two oblique series behind the choante. Toes 

 two-thirds webbed ; a single small metatarsal tubercle. Skin quite 

 smooth ; a large, flat, circular gland on each side. Uniform 

 brownish ; beneath finely whitish-spotted. 



Brazil. 



5. CALYPTOCEPHALUS. 



Peltocephalus, TscJiudi, Batr. p. 81. 



Calyptocephalus, {Bibr.) Dum. S,- Bibr. viii. p. 447 ; Gdnth. Cat. p. 21 ; 



Cupe, Nat. Hist. Bev. 1865, p. 112, and Journ. Ac. Fliilad. (2j vi. 



1866, p. 93. 



Pupil horizontal. Tongue circular, entire, free behind. Vomerine 

 teeth. Cephalic derm involved in a nigose cranial ossification, the 

 orbit being completely enclosed. Tympanum distinct. Fingers 

 free ; toes webbed, the tips not dilated. Outer metatarsals incom- 

 pletely separated. Omostcrnum cartilaginous ; sternum a carti- 

 laginous plate. Terminal phalanges simple. 



Chili ; Panama. 



1. Calyptocephalus gayi. 



Calyptocephalus gayi, Giintli. Cat. p. 21. 

 Peltocephalus quoyii, Tschudi, Batr. p. 81. 

 Calyptocephalus gayi, Buvi. ()■ Bibr. p. 450 ; Guichen. in Gaif, Chile, 



ix. p. 109, pi. 6;'Steindachn. Novara, Amp//, p. 15 ; Espada, Viaj. 



Pacif., Vert. p. 2. 



Vomerine teeth in two nearly straight series between the choanao. 

 Head depressed ; snout very short, rounded ; eyes small, interorbital 

 space much broader than the upper eyelid ; tympanum nearly as 

 largo as the eye. First finger shorter than second ; toes nearly 

 entirely webbed ; subarticular tubercles none ; inner metatarsal 

 tubercle oval, blunt ; no outer tubercle. The hind limb being 



