40 



GOBIID.f!. 



verse series between dorsal and anal. Yellowish ; a dark spot on the 

 gill-cover, and another at the root of the caudal fin. 



Total length 120 millim. 



Portuguese Guinea and Lower Niger. 

 1. Ty[>e. Gunnel R., affluent of Cacheu J\., Dr. W.J. Ansorge (C). 



Portnguese Guinea. 

 2-.3. All. Bissau, Portuouese Guinea. „ 



4-G. All. Degiinia, Lower Xioer. >; 



Eig. 22. 



Goh'nts occidentalis. 

 Type. 



:',. NEMATOGOBIUS. 

 Bouleng. Ann. & Mag. X. H. (8) vi. 1910, p. 500. 



Distinguished from Gobiiis by the presence of a pair of barbels on the 

 chin and of one to the anterior nostrils. 

 A single species. 



1. NEMATOGOBIUS AXSORGTI. 



Bouleng. r. c. and Ann. Mas. Congo, Zool. ii. 3, p. 2(j, pi. xvii. fig. 8 (1912). 



Body feebly compressed; depth of body 5 to 6 times in total length, 

 length of head S^ to 3| times. Head naked, IJ to ]f times as long 

 as broad, broader than deep ; snout short, rounded ; jaws equ^l in 

 front or lower slightly projecting; eye 4 to 4-j times in length of 

 head ; interorbital space very narrow ; mouth extending to below centre 

 of eye ; teeth in villiform bands ; no canines ; very regular series of 

 sensory papillae on the head ; mental barbels nearly as long as eye, 

 nasals shorter. Dorsals VI, I 11-12, contiguous; longest ray | to f 

 length of head. Anal I 9, originatin<>; a little further back than second 



