40 



GOBIID.E. 



verse series between dorsal and ana]. 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. Type. Gunnel R., affluent of Cacheu R., Dr. W. J. Ansorge (C). 



Portuguese Guinea. 

 2-3. Ad. Bissau, Portuguese Guinea. ,, 



4-6". Ad. Degama, Lower Niger. „ 



Fig. 22. 



Oobius occidentalis. 

 Type. 



3. NEMATOGOBIUS. 

 Bouleng. Ann. & Mag. N. H. (8) vi. 1910, p. 560. 



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

 chin and of one to the anterior nostrils. 

 A single species. 



1. NEMATOGOBIUS ANSORGTT. 



Bouleng. 1. c. and Ann. Mus. Congo, Zool. ii. 3, p. 26, pi. xvii. fig. 8 (1912). 



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

 length of head 3^ to 3J times. Head naked, 1J to If times as long 

 as broad, broader than deep ; snout short, rounded ; jaws equal in 

 front or lower slightly projecting; eye 4 to 4^ 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 papilla? on the head ; mental barbels nearly as long as eye, 

 nasals shorter. Dorsals VI, 111-12, contiguous; longest ray \ to § 

 length of head. Anal I 9, originating a little further back than second 



