o22 Mr. G. A. Boulenger on some 



teeth ; maxillary barbel about ^ length of head, a little longer 

 than the lower labials. Dorsal 1 5; spine not distinctly 

 serrated, about § length of head. Adipose fin ^ to ^ its 

 distance from the rayed dorsal. Anal lit 6. Pectoral spine 

 a little longer than the dorsal. Ventral extending to beyond 

 origin of anal. Caudal forked. Caudal peduncle nearly 

 twice as long as deep. Olive-brown, with irregular darker 

 cross-bands ; a dark bar at the base of the caudal and another 

 across each lobe of th(^ tin. 



Total length 70 millim. 



German East Africa (Korogwe, on the E,ufu River). 



Type in Berlin Museum. 



Thanks to the kindness of Prof. Pfeffer, one of the speci- 

 mens obtained by Stuhlmann at Korogwe is now in the 

 British Museum. 



2. ChilogJanis niloticus, sp. n. 



Distinguished from C. Dechenii in the following cha- 

 racters : — 



Depth of body 4 to 4^ times in total length. Diameter of 

 eye 6 times in length of head; interorbital width much 

 greater than the distance between tlie eye and the nostril. 

 Dorsal 1 6, the spine about | length of head. Pectoral spine 

 I length of head. Anal 111 8. Pale greyish olive above, 

 yellowish beneath ; four broad blackish cross-bands on the 

 body ; a horizontal blackish bar on each lobe of the caudal. 



U'otal length 45 millim. 



Several specimens were obtained in May last by Mr. "W. L. S. 

 Loat whilst on the island of Arko^ Soudan. 



2. EUCHILICIITHYS, gen. nov. 



Body moderately elongate, not or but feebly compressed. 

 Anterior dorsal entirely in advance of ventrals, formed of 1 

 spine and 6 branched rays j an adipose fin opposed to the 

 anal ; pectoral with a spine ; ventral with 7 rays. A ceplialo- 

 nuchal bony shield. Mouth large, inferior, surrounded by a 

 much-developed, circular, papillose lip; a broad band of 

 pointed, curved, movable teeth in the praemaxillaries, this 

 band entirely in advance of the narrower band of mandibular- 

 teeth, the base of which is long and slender, the crown trun- 

 cate or notched and bent up hook-like ; conical teeth on the 

 vomer; a barbel on each side, and a pair of very short ones 

 on each side of the lower section of the circular lip ; nostrils 



