336 



DR. A. GtNTHER ON 



[Nov. 18, 



in the nutrition of the fry. In a female 377 milllm. long the 

 structure is but little developed. 



Text-fi.s. 62. 



Mouth of CJirysichtJiys lagoensis. 

 A, i^ahital view ; B, lower view. 



Amphilius platychir Gthr. 



This species varies somewhat in the relative proportions of the 

 dorsal fins. In well-nourished and well-preserved examples the 

 adipose fin rises along a greater extent of the dorsal profile, thus 

 approaching nearer to the rayed fin : a condition not rarely 

 observed in other Siluroids with a long adipose fin. The barbels 

 are distinctly compressed. The back of these Gold Coast speci- 

 mens is marbled ; doi'sal and caudal fins with a black band across 

 the base and another across the middle. 



The specimens were collected on the River Atesu, and are 

 probably young, being 2| inches long. The occurrence of these 

 specimens at no great distance from the mouth of the river proves 

 that Amphilius is not confined to mountain-streams \ 



NOTOGLANIDIUM, g. n 



Head broad, depressed, covered with thick skin ; eyes small, 

 without free orbital margin, situated at the upper side of the 

 head ; posterior nostrils in a pit rather nearer to the eye than to 

 the end of the snout, anterior in the upper lip, terminating in a 

 short tube pointing downwards. Snout broad, with rather wide 

 mouth and three pairs of barbels. Teeth minutely villiform, none 

 on the palate. Gill-membranes attached to the isthmus without 



1 The typical specimens are stated to be from Sierra Leone, and there is no reason 

 to doubt the correctness of the statement (see Bouleuger, Ann. & Mag. N. H. 1898, 

 i. p. 254). They were given to me on the occasion of a visit to Fort Pitt Museum in 

 1862 by one of the Army surgeons, who had brought them from Sierra Leone wheve 

 he had been stationed, 



