MASTACE.MBELUS. 



1-11 



.-54. MASTACEMBELUS OPHIDIUM. 

 Giiiitli. rroc. Zool. Soc. 180;5, p. CSO ; Bouleng. Poiss. Bass. Congo, p. 499 (1901), 

 and Tr. Zool. Soc. xvii. Ill0t'>, p. 57(1. 

 Body feebly conipicssed, subcylinclncal, its depth 21 to 28 times 

 ill total length; length of head 8i to 10 times. Vent much nearer 

 end of snout than caudal, its distance from head 2^ to 2| times length 

 of hitter. Snout 2 to 2| times as long as e)e, ending in an appendage 

 whicli is shorter tliau latter; nioutli extending to below posterior 

 border of eye ; no prjeorbital or pricopercular spines. Dorsal XXX- 

 XXXIU 100-120; spines very bliort; distance between first spine and 



Fiff. nn. 





Masfaeemhdus opliidium. 

 Eurtou Gulf. |. 



head about i length of latter. Anal I 11-3-130. Caudal pointed, the 

 tail strongly attenuate behind. Pectoral ^ length of head. Scales 

 extremely small, about 25 between origin of soft dor.«al and lateral line. 

 Pale olive-brown above, with roundish spots of a darker brown, white 

 beneath ; dorsal and pectoral spotted with brown ; anal and caudal of 

 a light orange colour, unspotted. 



Total length 330 millim. 



Lake Tanganyika. 



1-.=). Types. 

 C. Ad. 



Near Ujiji. 

 Burton Gulf. 



E. Coode Hore, Esq. (P.). 

 Dr. W. A. C'unnington (C). 



