626 DR. A. G&NTHEB OX REPTILES, BATEACHIATTS, AND [XoV. 7, 



Hemicheomis afer, sp. n. (Plate LYII, fig. B.) 

 D. g . A. g. L. lat. 30. L. trausv. jq. 



Teeth conical, eighteen on each side of the outer series of the 

 upper jaw. Scales below the eye in four rather irregular series ; 

 those on the neck and anterior part of the back much smaller than 

 those of the body. In a specimen 4 inches long the diameter 

 of the eye equals the width of the prseorbital and the depth of the 

 scaly portion of the cheek, but is less than the width of the inter- 

 orbital space, which is convex. The angle formed by the prje- 

 opercular Umbs is a right one. Snout short and obtuse, shorter than 

 the postorbital portion of the head, the lower jaw not projecting 

 bej-^ond the upper. The height of the body is somewhat more than 

 the leugth of the head and equal to one third of the total (without 

 caudal). Dorsal spines of moderate strength and leugth, the longest 

 being about two fifths of the length of the eye. Pectoral fin 

 reaching to the vent. Body uniform more or less dark brown, a 

 spot on the end of the opercle and all the fins deep black. 



Gill-rakers short, some of them T- or hammer-shaped. 



Two specimens, the longer -i inches long, were collected by 

 the Eev. J. A. Williams. 



Bagkus mehidioxalis, sp. n. 



This species is closely allied to B. hayad, agreeing with this 

 Nilotic form in the shape and configuration of the head and the 

 number of fin-rays, but the dorsal and pectoral spines are much 

 ^^•eaker, scarcely stronger than the rays ; the maxillary barbels are 

 shorter, only about as long as the head ; and the adipose fin 

 occupies a much shorter space of the back, its distance from the 

 dorsal fin being equal to the length of the latter. 



The dry skin of a specimen 22^ inches long has been sent by 

 Mr. Johnston from the Upper Shire Eiver ; of course, it would 

 occur also in the Lake itself, and it probably reaches to a very 

 considerable size, like its congeners. 



'o^ 



Engeaulictpeis, g. n. Cyprin. 



Shape of the head and body elongated, cylindrical like that of an 

 Anchovy. Scales of moderate size, deciduous. Lateral line? 

 Dorsal fin short, with less than nine branched rays, opposite to the 

 commencement of the anal. Anal fin with about fourteen ravs. 

 Snout compressed, with the mouth of moderate width, lateral; the 

 upper jaw almost entirely hidden below the large praeorbital. Sub- 

 orbitals covering nearly the entire cheek. Gill-rakers very slender. 

 Pharyngeal teeth in a double series, pointed. 



Engeaulicxpeis prs-GTJis, sp. n. 



D. 11. A. 14. L, transv. 9 or 10. 

 Body very low, subcylindrical, its depth being one seventh or 

 one eighth of the total length without caudal ; the leugth of the 



