170 Messrs. E. Lonnberg and H. Rendahl on 



times in total length (s. c). Snout rounded, strongly pro- 

 jecting beyond mouth. Interorbital region flat ; its width is 

 contained about 2\ times in length of head. Eye supero- 

 lateral, in middle of length of head, its diameter about 5 times 

 in length of head, a little more than twice in interorbital 

 width. Width of mouth (with lips) a little less than jj 

 length of head. Upper lip well developed (but much narrow r 

 than in D. blanfordi) , feebly crenulated. Lower lip stir- 

 rounding a mental disc which is about as broad as long. 

 Two barbels on each side measuring about | diameter of eye. 

 Dorsal III 7, equally distant from eve and from caudal, 

 longest ray shorter than head. Anal II 4. Pectoral as long 

 as head, not reaching ventral, which originates below tlm 

 middle of the dorsal. Caudal emarginated. Lateral line 38, 

 5\ scales between beginning of dorsal and lateral line. 

 Caudal peduncle about l-£ times as long as deep, 15 scales 

 round the same. 



When first examining these specimens we were struck by 

 the great resemblance to D. blanfordi, Blgr. Dr. Bonleiiger, 

 to whom we took the liberty of sending a specimen for com- 

 parison, agreed with us in finding it similar to the species 

 mentioned, but pointed out that the upper lip of our form is 

 more feebly developed than in D. blanfordi, in which respect 

 it resembles D. johnslonii, Blgr. The latter has, however, 

 the eye situated in the second half of the eye, etc. 



This species differs very plainly from D. ornatus, Nichols 

 :and Griscom *., recently described from Stanleyville, by 

 beino- less compressed and by the supero-lateral situation of 

 the eye, which also is comparatively smaller, and by the not 

 banded caudal. 



rias lazera, Cuv. Val. 



Native name " Mpudi." 



Locality. From a lake at Mukimbungu in Lower pongo. 



Two specimens. 



Clarias nyola i sp. n. 



Native name " Ngola." 

 Locality. Kingoyi, Lower Congo. 

 One specimen, 18 cm. in total length. 



Depth of bodv 8 times in total length, length of head about 

 4^ times. Head 1^ times as long as broad, smooth ; occipital 



* Bull. Am. Mas. Nat. Hist. vol. xxxvii. 1917. p. 696. 



