290 SILURIDJE. 



1-3. Types. Prah R., Gold Coast. R. B. N. Walker, Esq. (P.). 



4-6. Hgr. & yg. Infoan, „ » (.0.) ; 



Dr. A. Giinther (P.). 

 7-12, 13-14. Ad., Ja R., S. Cameroon. G. L. Bates, Esq. (G). 



h g r -> & yg. 



8. EUTROPIUS MANDIBULARIS. 

 Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. 112 ; Steind. Notes Leyd. Mus. xvi. 

 1894, p. 57. 



Depth of body 3f to 4f times in total length, length of head 5 to 5£ 

 times. Head longer than broad ; snout projecting slightly beyond 

 lower jaw, longer than eye, which is 4 to 4 \ times in length of head. 

 Nasal, maxillary, and outer mandibular barbels subequal in length. 

 Dorsal I 6, entirely in advance of ventrals ; spine slender, serrated 

 behind, shorter than head. Anal 52-59. Pectoral reaching a little 

 beyond base of ventral, its spine stronger and as long as that of the 

 dorsal, its inner border strongly serrated. Caudal deeply forked, with 

 pointed lobes. 



Total length 230 millim. 



Bossumprah River, Gold Coast, and Farmington River, Liberia. — 

 Type (in Liverpool Museum) apparently lost. 



9. EUTROPIUS BOCAGII. 

 Guimaraes. Jorn. Sci. Lisb. ix. 1882, p. 85, fig. 



Depth of body 4 times in total length, length of head 4| times. 

 Head If times as long as broad ; snout broad ; lower jaw slightly 

 projecting ; eye perfectly lateral, 5 times in length of head, 3f times in 

 interorbital width ; vomero-palatine teeth forming an uninterrupted 

 band, which is as broad as the band of prsemaxillary teeth. Nasal 

 barbel not quite as long as eye ; maxillary barbel about § length of 

 head, outer mandibular h, inner mandibular \. Dorsal I 6, entirely in 

 advance of ventrals, twice as distant from caudal as from end of snout, 

 its spine feebly serrated behind. Anal 53. Caudal deeply forked, 

 with pointed lobes. Caudal peduncle hardly longer than deep. Back 

 reddish grey, dotted with black, sides and belly silvery ; fins speckled 

 with blackish. 



Total length 215 millim. 



Dondo R. (Quanza), Angola.— Type in Lisbon Museum. 



