550 ME. G, A. BOTJLENGEE ON A COLLECTION 



\ length of head. x\nal II 18. Pectoral acutely pointed, as long as head, reaching 

 root of ventral. Caudal deeply forked. Caudal peduncle twice as long as deep. 

 Scales 37 S, 1 between lateral line and root of ventral, 12 round caudal peduncle. 



Silvery, olive in the upper third. 



Total length 26 millim. This, according to Dr. Cunnington, is the full size of 

 the fish. 



Several specimens were taken at Mbete, in shallow water, by means of a piece of 

 calico held by two men. Native name : Salala. 



The genus Neobola Vinciguerra is intermediate between Barilius Ham.-Buch. and 

 Chelwthiops Blgr., differing from the former in the more posterior position of the dorsal 

 fin, from the latter in the absence of a ventral keel and in the wider separation of the 

 pectoral fins. Two species were known : N. bottegi Vincig., from Lake Rudolf, Galla- 

 land, and Somaliland, and N. argentea Pellegr., from Lake Victoria. 



The three species may be distinguished by means of the following characters : — 



Anal 17-19, its origin corresponding' to that of dorsal ; lateral line 40-45 ; 



mouth extending to beyond vertical of anterior border of eve . . N. bottegi Vincig. 



Anal 17-18, its origin corresponding to that of dorsal; lateral line 48-52 ; 



mouth extending to below anterior border of eye N. argentea Pellegr. 



Anal 20, originating in advance of dorsal ; lateral line 37 ; mouth extending 



to below anterior border of eye N. minuta Blgr. 



SlLUEID^!. 



16. Clarias robecchii Vincig. 



Niamkolo. Native name : Pongo or Kambali. 



Dinotopterus, g. n. 



Intermediate between Clarias and Heberobranchus. Dorsal fin divided into a rayed 

 and an adipose portion, but the latter not supported by produced neural spines. 

 Temple unprotected by bone. 



17. Dinotopterus cunningtoni, sp. n. (Plate XXXI.) 



Depth of body 1\ times in total length, length of head 3f times. Head extremely 

 flattened, once and | as long as broad, its upper surface covered with very thin skin 

 and rugose with striae radiating from the occipital region ; frontal fontanelle large, 

 twice and \ as long as broad, \ length of head ; occipital fontanelle very small ; a 

 rather long and narrow occipital process ; snout broad, truncate, not projecting beyond 



