132 MASTACEMBELID-T^. 



21. MASTACEMBELUS UBAXGENSIS. 



Bonleng. Ann. & Mag. X. H. (8) viii. 191L p. 037. 



MaMacewbelus marmoratus (non Perugia), Bouleng. Ann. Mas. Congo, Zool. n. 

 p. 22(1902). 

 Depth of body 15 to 3 6 times in total length, length of head 7 times. 

 Yent equally distant from head and from caudal, its distance from head 

 3 times length of latter. Snout twice as long as eye, ending in an 

 appendage which is hardly as long as eye; mouth extending to below 



Fio;. 8.5. 



Mastcu-emhelus ubanr/ensls. 

 Type. 



anterior border of eye ; a strong erectile spine below posterior nostril ; 

 two strong prseopercular spines. Dorsal XXIX-XXX 110; distance 

 between first spine and head f length of latter. Anal II 110. Caudal 

 pointed. Pectoral | length of head. Scales very small, about 15 

 between origin of soft dorsal and lateral line. Brownish, with an 

 ill-defined darker baud along the side of the head and body ; vertical 

 fins whitish ; with a series of large black spots at the base of the 

 posterior part of the dorsal ; a black spot on the caudal. 



Total length 100 millim. 



Ubanghi. — Type in Congo ^luseum, Tervueren. 

 ] . One of tlie types. Banzyville. C'apt. lioyavix (C.). 



22. MASTACEMBELUS ELLIFSIFER. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 12G, pi. xlii. fig. 4 (1899), and Poiss. Bass. 

 Congo, p. 496, pi. xxiv. fig. 2 (1901). 



Depth of body 10 J times in total length, length of head 7 times. 

 Vent equally distant from head and from caudal, its distance from head 

 3 times length of latter. Snout 3 times as long as eye, ending in an 

 appendage which is as long as eye ; mouth not extending to below 

 posterior nostril ; a strong erectile spine below alter ; two strong 

 prseopercular spines. Dorsal XXXI 70 ; distance between first spine 

 and head ^ length of latter. Anal II 70. Caudal rounded. Pectoral 

 ^ length of head. Scales very small, 20 between origin of soft dorsal 



