MASTACEMBELUS.. 



125 



13. MASTACEMBELUS NIGER. 



Sauv. Bull. Soc. Pliilom. (7) iii. 1878, p. 95, and N. Arch. Mus. (2) iii. 1880, 

 P . 37. 



Depth of body 14 lo 16 times in total length, length of head 8 to 9 

 times. Vent near])' equally distant from end of snout and from caudal, 

 its distance from head 3 times length of latter. Snout 4 times as lemm- 

 as eye, ending in an appendage which is a little longer than eye; mouth 

 extending to below anterior third of eye ; no pnrorbital or prseopercular 

 spines. Dorsal XXVII 80-90 ; spines very short, last a little longer 

 than eye ; distance between first spine and head as long as latter. 



l ? i£. 78. 



Mastacembelas niger. 

 Xcliali. j. 



Anal II 68-80. Caudal rounded. Pectoral f to ^ length of head. 

 Scales very small, 32-35 between origin of soft dorsal and anal; no 

 distinct lateral line. Dark brown above, yellowish beneath, with very 

 indistinct darker marblings ; dorsal and anal edged with yellowish ; 

 pectoral with small blackish spots. 



Total length 290 millim. 



Ogowe. — Type, in Paris Museum, examined. 

 1. Ad. Nchali, Lake Asebbe, near Fenian- Vaz. Dr. W. J. Ansorge (C). 



1-1. MASTACEMBELUS FLAVOMARGINATUS. 

 Bouleng. Tr. Zool. Soc. xv. 1898, p. 23. 



Mastacembelus cryptacanthus, part., Giinth. Ann. & Mag. N. H. (3) xx. 1867, 

 p. 110. 



Depth of body 13 to 16 times in total length, length of head 8 to 9^ 

 times. Vent nearly equally distant from end of snout and from caudal, 

 its distance from head 3 to 4 times length of latter. Snout 3 times as 



