NEMATOGOBIUS.— GOBIOIDES. 



41 



dorsal. Pectoral as long as head or slightly shorter. Ventral not 

 reaching vent, with well-developed anterior membrane. Caudal rounded, 

 as long as or a little shorter than head. Caudal peduncle 1| to 1§ times 

 as long as deep. Scales ciliated, 37-40 in longitudinal series, 10-11 in 

 transverse series between dorsal and anal. Yellowish brown above, 

 speckled with brown, with more or less distinct dark cross-bands ; dorsal 

 and caudal fins spotted with dark brown ; a round blackish spot on 

 upper part of pectoral fin, near its base. 



Total length 80 millim. 



"West Africa. 



Dr. W. J.Ansorge (C). 



1- 



-2. Types. 



Bengo R. at Cabiri, 

 Angola. 



3- 



-',. Ad. & hgr. 



Bengo R., at Quifangondo. 



6. 



Ad. 



( !hiloango Town. 



7. 



Ad. 



Geba R., Portuguese Guinea 



Fig. 23. 



Nematogobiws ansorgii. 

 Type (A. M. C). 



4. GOBIOIDES. 



576 (1800) ; Cuv. & 



Val. Hist. Poiss. xii. p. 139 



Lacep. Hist. Poiss. ii. p. 



(1837). 

 Amblyopia, Cuv. & Val. t. c. p. 157 ; Giinth. Cat. Fish. iii. p. 133 (1861). 



Teeth conical, in a band, the anterior enlarged. Body much elongate 

 and compressed. A single very long dorsal fin, with the 6 or 7 anterior 

 rays simple ; anal also very long. Ventral fins united into a disk, 

 which is not attached to the belly. Scales absent or very small or 

 rudimentary. 



Coasts, estuaries, and fresh waters near the sea, within the tropics. — 

 One species in West Africa, closely allied to G. broussoneti, Lacep., from 

 the East Coast of S. America. 



