MASTACEMBELUS. 



141 



U. MASTACEMBELUS OPHIDIUM. 

 Giintli. Pi-oc. Zool. Soc. 1893, p. G30 ; Bouleng. Poiss. Bass. Congo, p. 499 (1901), 

 and Tr. Zool. Soc. xvii. 190G, p. 576. 



Body feebly compressed, subcyliiidrical, its depth 21 to 28 times 

 in total length; length of head 8|- to 10 times. Vent much nearer 

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

 of latter. Snout 2 to 2-| times as long as e}e, ending in an appendage 

 which is shorter than latter ; mouth extending to below posterior 

 border of eye ; no pvseorbital or prseopercular spines. Dorsal XXX- 

 XXXIII 100-120; spines very short; distance between first spine and 



Eig. 96. 



Mastacemhelus ojphidhim. 

 Burton Gulf, f . 



head about | length of latter. Anal I 115-130. Caudal pointed, the 

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

 extremely small, about 25 between origin of soft dorsal 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. 



1-5. Types. 

 6. Ad. 



Near Ujiji. 

 Burton Gulf. 



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

 Dr. W. A. Cunnington (C). 



