NATURAL SCIENCES OF PHILADELPHIA. 117 



This species i? in general appearance somewhat similar to the A. var i u s, 

 from Central America, but that has a relativtly longer body and shorter limbs 

 and head, and lacks the singular nasal appenuuge. In this species the clavi- 

 cles and coracoids are considerably more divergent. It constitutes among 

 Atelopodes, an approximation to Rhinoderma. 



In the writer's examination of the Families of Raniform Anura* the genera 

 Atelopus and Phrynidium were accidentally retained as distinct, as was done 

 by Giinther, the fact having been lost sight of while correcting the proofs that 

 Peters had shown them to be identical in the structure of the auditory appa- 

 ratus. I do not think it probable that they should be retained as distinct on 

 account of the remarkable difference in the degree of ossification of the 

 ethmoid, which I have there pointed out. 



Tlie structure of the sternum in Atelopus longirostris throws much 

 light on that of the genus Hemisus, discussed in the essay above quoted. The 

 latter genus ought probably to have been compared with Phryniscidre rather 

 than Engystoumidffi. I have already shownf that the clavical and coracoid 

 are not in contact in Atelopus, but are connected by a simple longititudinal 

 cartilage. This is the structure in all the Phryniscidfe I have examined, and is 

 quite different from the truly Raniform character of the Dendrobatida and 

 Colostelthidie. This elongation of the confluent epicoracoid cartilages — for 

 such is its homology — reaches its greatest extent in the family, in Ate- 

 lopus longirostris, making a distant approach to what is probably 

 the condition in Hemisus. The anterior transverse element of the latter genu3 

 is therefore probably rather clavicle than coracoid, as suggested above. 



Atelopus l^evis Cope. Phrynicus Ixvis Gthr. Catal. B. M. 

 From the valley of Quito. 



Ranula affinis ? Rana affinis Peters, Monatsberichte, Berlin Acad. 



This may be Peter's species, though the latter is so briefly described that it is 

 not readily identified. Having examined the type in Berlin, I am not prepared 

 to agree with its learned describer that it is a climatal variety of Rana tem- 

 po r a r i a. 



Dr. Steindachner recognizes this genus, :]; but renames it Poklia, and gives 

 it a character of cartilaginous "Stirnbeine" in front, rather than cartilaginous 

 ethmoid. 



The genus Ranula turns out to have simple terminal phalanges as in Rana, 

 therefore three of the species formerly assigned to it by me, which have T- 

 shaped phalanges must be regarded as belonging to another and unnamed, 

 genus. This 1 call Trvpheropsis and refer to T. c h r y s o p r a s i n u s m. as 

 the type. It represents the Hylarana of the Old World, and bears the same 

 relation to Ranula that the former does to Rana. 



Size and form that of Rana c 1 amita n s, but with small merabranura tym- 

 pani — equal to orbit, and 1-5 length of muzzle. Toes palmate to near end of 

 last phalange, to basis of the same of longest toe. Head plane above, 

 fronto-parietals broad without posterior crests, equal between orbits the 

 length of ethmoid cartilage. Canthus rostralis sharp, loreal region concave ; 

 muzzle truncate in profile. Prefrontal bones three times as long as wide. 

 Vomerine teeth in two small fasciculi, exactly between inner nares, nearer to 

 each other than to the latter. Nares considerably less than ostia pharyngea. 

 Outer nostrils half as far from end of muzzle as from orbit. Skin everywhere 

 smooth, except a few minute granulations on posterior pelvic region. Fingers 

 elongate, the inner longer than the second, all with a narrow dermal margin. 

 When extended, the bases of the metacarpals mark the end of the muzzle. 

 The hind limbs extended, nearly measure to the end of the muzzle with the 

 heel. 



1868.] 



• Journ. Ac. Xat. Sci. 1867, 189. 



t Nat. Hist. Review. ISHS. 



X Characterized Proc. Academy, 1866, 129. 



