46 GOBIID.E.— OSPHKOMENILLK. 



6. LENTIPES. 



Sicyogaster (non Barnev.), Gill, Proc. Ac. Philad. 1860, p. 102. 

 Lentipes, Gunth. Cat. Fish. iii. p. 96 (1861); Ogilvie-Grant, Proc. Zool. Soc. 

 1884, p. 170. 



Closely allied to the preceding, but with a series of fixed teeth in the 

 jaws, movable teeth absent or present on the lower jaw only, and body 

 naked or with the posterior part covered with cycloid scales. 



Rivers of San Thome and the Sandwich Islands. 



1. LENTIPES BUSTAMANTJEI. 



Sicydium hustamantei, Greeff, Sitzb. Ges. Nat. Marburg, 1884, p. 50 (nomen 

 nudum). 



Body feebly compressed, its depth 7 to 8 times in total length ; length 

 of head 5J to 65 times in total length. Head 1§ times as long as 

 broad ; snout shorter than the eye, which is 3 to 3J times in length of 

 head and exceeds interorbital width; mouth small, inferior. Dorsals VI, 

 1 10, widely separated from each other. Anal I 8. Caudal rounded. 

 Body nearly entirely naked. Uniform yellowish. 



Total length 25 millim. 



San Thome, Gulf of Guinea. 



1-20. Types. Eio do Ouro. Dr. J. A. Henriques (P.). 



Fam. 12. OSPHROMENID.E. 



A superbranchial respiratory organ, situated in a cavity above the 

 gills. Mouth protractile, the maxillaries excluded from the oral 

 border ; palate toothed. Suborbitals with more or less developed 

 internal lamina?, supporting the eye ; lower pharyngeal bones separate ; 

 "ill-membrane grown to isthmus ; 4 to 6 branchiostegal rays. Two 

 nostrils on each side. Spinous dorsal more or less developed. Ventral 

 fin near the pectoral, with a spine and four or five soft rays, or reduced 

 to a single filamentous ray. Preecaudal vertebra? with transverse 

 processes, at the back of which the ribs are inserted. Air-bladder 

 simple or bifid and prolonged into the caudal region. 



South-eastern Asia. One genus in Africa. 



