1907.] 



AFRICAN SILUEID FISHES. 



1091 



spine strongly serrated on both sides, | the length of the fin. 

 Ventrals nearly twice as far from the caudal as from end of 



Text-fio-. 257. 



Clarias salce. 



snout. Caudal f length of head. Blackish-brown or dark green 

 above, with or without small yellowish spots. 



Total length 360 millim. Reaches to 435 millim. 



Liberia. 



2. Allabexchelys. 



Boulenger, Proc. Zool. Soc. 1902, i. p. 234. 

 Two species : — 



Depth of body 7-8^ times, head 5-5^ times in total 

 length ; ventral l^-lf as distant from root of caudal as 

 from end of snout ; t>. 65-75, A. 60-65 1. ^. hrevior Blgr. 



Depth of body 9-12 times, head 5* to 6 times in total 

 length ; ventral If to 2 as distant from root of caudal 



as from end of snout : D. 80-90, A. 60-75 



2. A. loiigicauda Blgr. 



1. Allabenchelys brevior. 



Boulenger, Ann. & Mag. N. H. (7) xii. 1903, p. 439. 



Depth of body 7 to Sk times in total length, length of head 

 5 to 5| times. Head 1^ to I5 times as long as broad, smooth 

 above, the bony casque, in the middle of the head, about | 

 width of head ; postorbital bone narrow ; supraoccipital process 

 acutely pointed ; a small frontal fontanelle ; occipital fontanelle a 

 little smaller, partly on occipital process ; eye very small, 2j to 

 3 times in length of snout, 5 to 6 times in interorbital width 

 which is I length of head ; band of prfemaxillary teeth 3 to 4 



