338 ON FISHES FROM THE GOLD COAST. [NoV. 18, 



Labeo walkeri sp. n. (Plate XXXIII.) 



Closely allied to L. hracliypoma. 



D. 14. A. 7. L. lat. 33. L. transv. 4/6. 



Mouth broad. Lips very thick, with a distinct inner fold in 

 their entire circumference ; lower lip fringed along its anterior 

 and posterior margins. Snout thick, produced, much projecting 

 beyond the lower jaw, with a broad lobe on each side ; the 

 terminal portion of the snout is rather contracted and turned 

 upwards ; maxillary barbel small, hidden in the lateral groove. 

 Eye lateral, immediately below the upper profile, about as large 

 as the exposed portion of a scale, situated entirely in the posterior 

 half of the head. Head small and thick, a little less than one 

 fourth of the total length (without caudal) ; the width of the flat 

 interorbital space one half of the length of the head. Gill-cover 

 very short. There are three longitudinal series of scales between 

 the lateral line (which is indistinct) and the ventral fin. The free 

 portion of the scales much higher than long. Dorsal fin high, 

 with the upper margin straight, equidistant from the root of the 

 caudal and the front margin of the orbit ; anal extending to the 

 root of the caudal, at least in our largest example ; caudal forked. 

 Pectoral fin not reaching the base of the ventral ; ventral inserted 

 in front of the vertical from the last dorsal ray. Body moderately 

 elongate, tail strongly compi'essed ; the height of the body is not 

 quite one fourth of the total length (without caudal) ; free poi-tion 

 of the tail as deep as long, its greatest depth being two thii'ds of 

 the leng-th of the head. Coloration uniform. 



Snout covei-ed with tubercles in mature specimens. 



Several specimens from Nyankoma, the largest measuring 

 205 miUim. 



Haplochilus spilauchen Dum. 



Town of Akropon, and Infoan (a village on a tributary of the 

 Ofiimll.). 



Haplochilus infra- fasciatus Gthr. 

 Bokitsa Mine (Wasa district) ; E,. Atesu. 

 Alestes longipinnis Gthr. 



Alestes cliaperi Sauvage, Bull. Soc. Zool. France, vii. 1882, 

 p. 320, pi. V. fig. 3. 



From the examination of a long series of specimens, including 

 types of A. longipinnis and A. chaperi, I come to the conclusion 

 that the two forms should not be specifically separated. A. longi- 

 pinnis was described as having the origin of the dorsal fin nearer 

 to the end of the snout than to the root of the caudal, A. chaperi 

 being distinguished by a more backward position of that fin. 

 However, in some of the specimens before me the first dorsal ray 

 is exactly midway between those two points ; and I am unable to 

 find any other specific diflTerences. 



