212 ADDENDA, VOL. I. 



2. DISCOGNATHUS, Heck. 



1. DISCOGNATHUS DEMBEENSIS, Rupp. 

 Add:- 

 20. Hgr. Eusso Nyiro, Brit. E. Africa. A. B. Percival (P.). 



21-27. Ad. & hgr. Eusso Mara, „ „ » 



28-37. Ad. & hgr. Saya, „ „ 



6. DISCOGNATHUS HINDU, Blgr. 

 Add:— 

 21-27. Ad. & hgr. Rumurufci, Waso Narok (Lorian Sir F. J. Jackson (P.). 

 Swamp). 



3. VAEICORHINUS, EUpp. 



Acapoeta, Cockerell, Proc. Biol. Soc. Washington, xxiii. 1911, p. 149. 



As the number of species has been more than doubled since the 

 publication of the first volume of this Catalogue, it is advisable to 

 give a new key to their identification. 



Synopsis of the Species. 



I. Two pairs of barbels ; last simple ray of dorsal strong and ossified. 



A. Spine o£ dorsal shorter than head ; 9 branched rays in dorsal ; posterior 



barbel as long as eye. 

 Sc. 29jj, 2, 12; caudal peduncle not longer than 



deep ; ventrals below anterior soft rays of dorsal . V. ansorgii, Blgr. 

 Sc. 31|f , 2^, 12 ; caudal peduncle much longer than 



deep ; ventrals below middle of dorsal .... V. brucii, Blgr. 



B. Spine of dorsal longer than head ; 10 (rarely 9 or 11) branched rays in 



dorsal ; posterior barbel shorter than eye. 



Sc. 30-35 :^^ 2-21, 12-14; mouth straight, with 



rounded papillae in front and behind ; posterior 

 barbel about ^ diameter of eye ; ventrals below 



anterior rays of dorsal V. ensifer, Blgr. 



Sc. 41 pf , 4, 16 ; mouth curved, without papillse ; 

 posterior barbel | diameter of eye ; ventrals below 

 middle of dorsal V. stenostoma, Blgr. 



