SILUEID.E. 



287 



Add :— 

 13-14. Ad. 



27. CLARIAS TACHYNEMA, Blgr. 



Akonolinga, Xyong R. 



G. L. Bates, Esq. (C). 



Add :— 

 9. Ad. 



10-11, 12. Ad. 

 13. Ad. 



28. OLARIAS LJi;VlC!EPS, Gill. 



Corbal R. at Tchitoti, Portug. Dr. W. J. Ansorge (C). 



Guinea. 



Tano R., Gold Const. D.-. H. G. F. Spui-rell (P.). 



Ja R., S. Cameroon. G. L. Bates, Esq. (C). 



PIk. 1 76. 



Clarias Jiilr/endorji. 

 Type. f. 



28a. CLARIAS HILGENDOEFI. 

 Bouleng. Ann. & Mag. N. H. (8) viii. IDII, p. 54. 



Depth of bodj' 6J times in total length, length of head 4| times. 

 Head If times as long as broad, smooth ; occipital process longer than 

 broad, acutely pointed ; frontal fontanelle sole-shaped, 2| times as long 

 as broad ; occipital fontanelle narrow, elongate, partly on occipital 

 process ; eye very small, 3 times in length of snout, 6 times in inter- 

 orbital width, which is a little less than -^ length of head ; band of 

 prtemaxillary teeth not quite 4 times as long as broad ; vomerine teeth 

 granular, forming a curved band which is nearly as broad as the 

 prsemaxillary band ; nasal barbel f length of head, maxillary 1^, outer 

 mandibular nearly 1, inner mnndibular |. Gill-rakers few, 12 on first 



