SILUEIDvE. 289 



teeth a little more than 4 times as long as broad, as broad as vomerine 

 band ; nasal barbel If to If times as long as head ; maxillary barbel 

 longer than head. Dorsal 74-81, its distance from occipital process 

 a little more than \ length of head. Anal Gl. Pectoral nearly \ to § 

 length of head, spine serrated on inner side. Ventral \\ to If times as 

 distant from root of caudal as from end of snout. Caudal longer than 

 head. Anal with a light edge. 



Total length 200millim. 



Ituri River, Upper Congo. — Types in Vienna Museum. 



Distinguished from the two other species of the genus by a broader 

 head, longer nasal barbels, and a longer caudal fin. 



Add :— 



3. CLARIALLABES, Blgr. 



1. CLARIALLABES MELAS, Blgr. 



i. Ad. Lebusi R. (CLiloango) at Dr. W. J. Ansorge (C. ). 



Kuka Muno. 



la. CLARIALLABES BREVIBARBIS. 

 Pellegr. Bull. Soc. Zool. France, xxxviii. 1913, p. 272. 



Closely allied to C. melas. Distinguished by shorter barbels, the 

 nasal measuring § length of head, the maxillary scarcely longer, fewer 

 (9) gill-rakers, and a longer caudal. Dorsal 102; anal 91. 



Total length 290 millim. 



Ngomo, Ogowe. — Type in Paris Museum. 



4. GYMNALLABES, Gthr. 



1. GYMNALLABES TYPUS, Gthr. 



? Clariallabes longicaudatus, Pappenh. Mitth. Zool. Mus. Berl. v. 1911, p. 519, fig. 



5. CHANNALLABES, Gthr. 



1. CHANNALLABES APUS, Gthr. 



Bouleng. Ann. Mus. Congo, Zool. ii. 3, p. 17 (1912) ; Steind. Denkschr. Ak. 

 Wien, lxxxix. 1913, p. 28. 



Add :— 



12-13. Ad. Lebuzi R. (Chiloango) Dr. W. J. Ansorge (C). 



at Kuka Muno. 

 It. Yg. Luali R. (Chiloango) n 



at Lundo. . . . 



VOL. IV. U 



