132 MASTACEMBELID-E. 



21. MASTACEMBELUS UBAXGEXSLS. 



Bouleng. Ann. & Mag. N. H. (8) viii. 1911, p. 037. 



Mastacembelus marmomtus (non Perugia), Bouleng. Ann. Mas. Congo. Zool. ii. 

 p. 22 (1902). 



Depth of body 15 to ] 6 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 twice as long as eye, ending in an 

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



Fig. 85. 



Mastacembelus ubangensis. 



Type. 



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

 two strong praeopercular 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 band 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 Museum, Tervueren. 

 1. One of the types. Banzyville. Capt. Boyanx (C). 



22. MASTACEMBELUS ELLIPSIFEB. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 126, pi. xlii. fig. 4 (1899), and Poiss. Bass. 

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



Depth of body 10j 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 after ; two strong 

 preeopercular spines. Dorsal XXXI 70 ; distance between first spine 

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

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



