Mr. G. A. Boulenffer on Amencan Batrachians. 457 



Siphonops brasiliensis. 



Siphonnps brasiliensis, Liitk. Vid. Meddel. 1851, p. 54 (1852) ; Eeinli. 

 & Liitk. Vid. Meddel. 1861, p. 202. 



I find on examination of the type specimen, kindly entrusted 

 to me by Prof. Liitken, that Siphonops brasiliensis belongs 

 to that genus in the restricted sense, not to DermopMs^ as 

 suggested by Peters. The shape of the tentacle is exactly as 

 in ISiphonops annulatus^ and so is its position with respect to 

 the eye, which is very indistinct ; the dentition does not 

 differ, so far as I can judge from the condition of the speci- 

 men. The more prominent snout and the much more elon- 

 gate body easily distinguish 8. hrasiUensis from 8. annulatus^ 

 and the position of tlie tentacle separates it from S. Hardy i^ 

 as may be seen from the following synopsis : — 



Tentacle in front of and below the eye, which 

 is perfectly distinct ; diameter of body about 25 

 times in the total length ; 85 to 95 circular folds, 

 all complete . 1. S. annulutus, Mik. 



Tentacle in front of and below the eye, which 

 is very indistinct ; diameter of body 46 times 

 in the total length ; 138 circular folds, mostly 

 interrupted on the back and belly 2. S. hrasiUensis, Liitk. 



Tentacle in front of and close to the eye, and 

 very slightly below ; eye moie or less distinct ; 

 diameter of body 36 or 37 times in the total 

 length ; 100-104 circular folds, all complete .... 3. /S. Ilanhji, Blgr.* 



Typhlonectes Kaupii. 



Siphonops Kaupii, Berthold, Gotting. Nachr. 1859, p. 181, and 1867, 



p. 36] . 

 Ca?cilia dorsalis, Peters, Mon. Berl. Ac. 1877, p. 459, pi. — . 

 Typhlonectes dorsalis, Peters, Mon. Berl. Ac. 1879, p. 941. 



The earlier name 8. Kaupii^ which evidently applies to the 

 same species as that named G. dorsalis by Peters, has hitherto 

 been overlooked. 



* The British Museum has recently received two more specimens of 

 this species, from M. Hardy du DrtSneuf. 



