SILUEID.E. 30-J 



4. GEPHYROGLANIS TILHOI, Pellegr. 

 Pellegr. Poiss. Bass. Tchad, p. 101, pi. i. fig. i (1914). 



4 a. GEPHYROGLANIS GYMNORHYNOHUS. 



Pappenh. in Sclmbotz, Wiss. Ergebn. Deutsch. Z.-Afr. Exped., Zool. iii. p. 248, 

 pi. iv. fig. 6 (1914). 



Depth of body nearly 5 times in total length, length of head 3| times. 

 Head moderately depressed, If times as long as broad, granulated and 

 striated on the vertex and occiput ; occipital process rather longer than 

 broad, in contact with interneural shield ; snout conical-subtruncate, 

 nearly as long as eye, which is oval and 3 times in length of head, equal 

 to interorbital width ; pra?maxillary band of teeth nearly straight ; no 

 nasal barbel ; maxillary barbel a little over -f length of head, outer | and 

 nearly If times as long as inner. Dorsal I 6, not reaching adipose fiu 

 when folded ; spine feebly serrated on both sides towards the extremity, 

 Yo length of head ; first and second soft rays longest, slightly shorter 

 tlian head. Adipose dorsal a little deeper than long, its base j that of 

 rayed dorsal and about | its distance from latter. Anal 12, 9 rays 

 branched. Pectoral spine strongly serrated on inner side, f length 

 of head. Caudal deeply forked, with pointed lobes. Caudal peduncle 

 nearly 2^ times as long as deep. Brownish above, silvery on the sides 

 and beneath ; a blackish spot behind the gill-cover. 



Total length 78 millim. 



Aruwimi Eiver, Congo. — Type in Berlin Museum. 



Closely allied to G. tilhoi, but dorsal not produced and nasal barbel 

 entirely absent. 



5 a. GEPHYROGLANIS HABERERT. 

 Steiad. Anz. Ak. AMen, 1912, p. 449, and Denkschr. Ak. Wien, Ixxxix. 1918, 

 p. 36, pi. vi. 



Allied to G. lovgrpwnis, but nasal barbel extremely shrrt, anterior 

 barbel f length of head, and upper surface of head covered with skin ; 

 dorsal not reaching adipose fin when folded. 



Total length 250 millim. 



Ja River (Congo System), South Cameroon.— Type in Vienna 

 .Museum. 



VOL. IV. ^ 



