"132 M.VSTACEMBELID.E. 



21. MASTACEMBELUS UBANGEXSIS. 



Boulon<?. Ann. & Mag. X. H. (8) viii. I'.HK i-. (;;57. 



Mastacemhelus mannoratiis (non I'crugia), Boulcng. Ann. Miis. Congo, Zool. ii. 

 p. 22 (11)02). 



Depth of body lo to ](t times in total leiigtli, length of head 7 times. 

 Vent equally di.stunt from head and from caudal, its distance from head 

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

 a])pendagc whicli is hardly as long as eye; mouth extending to below 



Fig. 85. 



Alastacemhelus tiba>u/e»sif. 

 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 llO. Caudal 

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

 between origin of sofc 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 iSluseum, Tervueren. 

 1. One of the types. Bunzyville. C'apt. Royaux (C). 



22. MASTAGEMBEi.U8 ELLIl'iSlFEU. 



r>oulpng. Ann. Mus. Congo, Zool. i. p. 12(), pi. xlii. fig. 4 (1899), and Toiss. Bass. 

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



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

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

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

 ap])endage which is as long as eye ; mouth not extending to below 

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

 prpeopercular spines. Dorsal XXXI 70 ; distance between first spine 

 and head ^ length of latter. Anal II 7(1. Caudal rounded. Pectoral 

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



