148 ME. G. A. BOULENGER ON A COLLECTION 



Young specimens, measuring up to 130 millim., collected at Kibwesi, in deep water, 

 by Mr. Moore, may, I think, be referred to this species. The depth of the body is 5 or 

 6 times in the total length ; head |- or ^ longer than broad ; diameter of the eye oj to 

 3f times in the length of the head, 1^ to 1^ in the interocular width ; maxillary barbel 

 f to f the length of the head ; vomero-pterygoid teeth forming a narrow subcrescentic 

 band, slightly interrupted mesially. Base of adipose dorsal 5 or f its distance from the 

 rayed dorsal ; anal IV 8-10 ; 7 to 9 very large retrorse serrse on the inner side of 

 the pectoral spine. A blackish spot at the end of the dorsal, and another on each lobe 

 of the caudal. 



13. Cheysichthys brachynbma. (Plate XV.) 

 Bouleng. Anu. & Mag. N. H. (7) vi. 1900, p. 480. 



Depth of body 4 to 5 times in total length, length of head 3-j to 3^ times. Head 

 broad and much depressed, •§- or ^ longer than broad, covered with thick smooth skin ; 

 snout much flattened, twice as broad as long, broadly rounded, projecting a little 

 beyond the lower jaw, its length J that of the head ; diameter of the eye 1-| to twice 

 in the length of the snout, 5 or 6 times in the length of the head, and 2 or 2^ in the 

 interocular width ; occipital process hidden under the skin, but reaching the inter- 

 neural shield : nasal barbel as long as or slightly longer than the diameter of the eye in 

 the young, § the diameter of the eye in the adult ; maxillary barbel ^ or ^ the length 

 of the head ; outer mandibular barbel ^ or ^ the length of the head, inner ^ or ^. 

 Vomero-pterygoid teeth forming a broad crescentic or horseshoe-shaped band, uninter- 

 rupted or narrowly interrupted mesially ; this band as broad as the prsemaxillary band 

 in the adult, also widening behind, narrower and more tapering behind in the young. 

 Dorsal I 6 ; spine very feebly serrated in front and behind, covered with a thick skin, 

 its length f that of the head and a little shorter than the soft rays. Adipose dorsal 1-^ 

 to twice as long as deep, its base hardly equal to that of the rayed dorsal and ^ or ^ its 

 distance from the latter. Anal IV 8-9. Pectoral spine thicker and longer than that 

 of the dorsal, armed on its inner side with strong retrorse serrse. Ventral not reaching 

 the anal. Caudal deeply notched, with obtusely pointed lobes, the longest rays twice 

 to twice and a half as long as the middle ones. Caudal peduncle 1^ to If as long as 

 deep. Olive above, white beneath. 



Total length 400 millim. 



Several specimens from Kalambo and Usambura. 



This species is also closely allied to C. cranchii, but may be distinguished from it by 

 the absence of rugosities on the skull, the shorter head, and the shorter mandibular 

 barbels. 



14. AUCHBNOGLANIS BISCUTATUS Geoffr. 



Kalambo ; also far out, in deep water. 



