IGU ON A COLLECTION OF I'lSllES EEOM LAKES TANGANYIKA AND KIVU. 



with caudal, which is short and rounded ; dorsal XVIII 85 ; anal II 90 ; first anal spine 

 very short, second ^ length of head ; distance between first dorsal spine and head 

 1§ times length of latter. Pectoral f length of head. Scales extremely small, 22 

 between origin of dorsal and lateral line. Yellowish brown above, marbled with 

 darker, yellowish beneath ; a dark brown streak on each side of the head, passing 

 through the eye ; two brown bars across the caudal. 



Total length 250 millim. 



A single specimen, a female full of ova, from the north end of Lake Tanganyika. 



50. Mastacembelus TiENiATus. (Plate XX. fig. 4.) 

 Bouleng. Ann. & Mag. N. H. (7) vii. 1901, p. 6. 



Depth of body 13 times in total length, length of head 6^ times. Vent equally 

 distant from head and from caudal fin, separated from head by a space equal to 3 times 

 length of latter. Snout twice as long as eye, ending in a trifid appendage as long 

 as latter; buccal cleft extending to below anterior border of eye; no prseopercular 

 spines. Dorsal and anal fins confluent with caudal, which is short and rounded ; dorsal 

 XXXIII 85 ; anal II 85 ; first anal spine extremely short, second as long as last dorsal. 

 Pectoral 3- length of head. Scales extremely small, 25 between origin of dorsal and 

 lateral line. Yellowish ; a brown lateral band, from the end of the snout, through the 

 eye, to the caudal region, where it widens, its borders become sinuous, and it bears 

 some yellow spots. 



Total length 105 millim. 



A single specimen from the north end of Lake Tanganyika. 



