322 ADDENDA, VOL. IT. 



46. SYNODONTIS GELEDENSIS, Gthr. 

 Add: — 



2. Ad. Eusso Nyiro, near Lorian Swamp. A. B. Percival, Esq. (P.). 



50. SYNODONTIS NUMMIFER, Blgr. 

 Steind. Denkschr. Ak. Wien, Ixxxix. 1913, p. 40, pi. vii. 



51. SYNODONTIS SOREX, Gthr. 

 Pellegr. Poiss. Bass. Tchad, p. 110, pi. x. fig. 2 (1914). 



52. SYNODONTIS PLEUROPS, Blgr. 

 Sieind. t. c. p. 41. 



53. SYNODONTIS DEOORUS, Blgr. 

 Steind. t. c. p. 42. 



54. SYNODONTIS OLARIAS. L. 

 Pellegr. op. cit. p. Ill, pi. x. fig. 3. 



Add :— 

 30-35. Yg. Deerr. mouth, of Gurara R., Niger. J. J. Simpson, Esq. (P.). 



And erase one of the specimens (29) from Nianimaru, Gambia, which 

 is referred to the following species : — 



54 a. SYNODONTIS ANNECTENS. 

 Bouleng. Ann. & Mag. N. H. (8) viii. 1911, p. 56. 



Intermediate between S. sorex and S. clarias. Agreeing with the 

 former in the length of the snout, which is more than ^ length of head 

 and 3 times diameter of eye in adult, with the latter in the maxillary 

 barbel. Further differs from S. clarias in having the spine of the dorsal 

 fin perfectly smooth in front and the serration on the inner side of the 

 pectoral spine much more feeble in the adult. 



Total length 270 millim. 



Gambia and Portuguese Guinea. 



1. Type. Nianimaru, Gambia. J. S. Budgett, Esq. (P.). 



2. Type. ( 'uluti R. at Bafata, Porhig. Guinea. Dr. W. J. Ansorge (C). 



3. Type. Culufi R. above ,. 



4. Type. Geba R. at 



