(5JjS On new African Fishes, 



Total length 100 mm. 



Two specimens (probably young) from Banzyvilley 

 Ubiinghi, from the collection o£ Captain Royaux. One is 

 ])reserved in the Congo Museum, Tervueren^ the other in the 

 Natural History Museum. 1 had previously referred theut 

 to M, marmoratus, Perugia. 



Mastacembelus hrevicauda. 



Depth of body 13 to 14 times in total length, length of 

 liead 7 to 8^ times. Vent equally distant from liead or prse- 

 operculum and from caudal, its distance from head 3 to 3^ 

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

 in an appendage which is as long as ej-e; mouth extending 

 to below anterior third or centre of eye ; no prseorbital spine ; 

 2 or 3 small prffiopercular spines. Dorsal XXIX— XXXII 

 70-80 ; spines very short, last scarcely longer than the eye j 

 distance between first spine and head f to | length of head. 

 Anal II 70-80; first s])ine minute, often very indistinct. 

 Caudal obtusely pointed. Pectoral ^ length of head. Scales 

 very small, 15-17 between origin of soft dorsal and lateral 

 line ; latter formed of a few tubules widely separated from 

 one another, Olive-brown above, usually with a more or 

 less distinct dark brown band on each side of the back 

 above the lateral line^ and a vertebral series of small dark 

 brown spots corresponding with the spines ; sides mottled 

 with dark brovv^n ; caudal region marbled with dark brown, 

 with light spots towards the caudal fin, which bears one or 

 several large black spots and is edged with whitish j 

 yellowish beneath, sometimes with a brown network. 



Total length 200 mm. 



Numerous specimens from South Cameroon (Kribi River, 

 Zima Country, Ja and Buiiiba River,^), received from Mr. G. 

 L. Bates. 



Mastacemhelus reticulafus. 



Depth of body 11 to 12 times in total length, length of 

 head 7 to 7^ times. Vent equally distant from head and 

 from caudal, its distance from former 3 times length of latter. 

 Snout 3 times as long as eye, ending in an ajipeudage which 

 is 1| times as long as the eye ; mouth extending to below 

 nostril ; no prseoibitai spine ; two strong praiopercular spines. 

 Dorsal XXXI-XXXIl 90 ; spines extremely short, last not 

 longer than eye ; distance between first spine and head 

 ^ length of head. Anal II 90-95 ; tiist spine extremely 

 short, very indistinct. Caudal rounded. Pectoral ^ length 



