506 



SILURID.E. 



times in interocular width ; maxillary barbel \ length of head, man- 

 dibulars shorter still. Occipital process 2\ times as long as broad, 

 reaching interneural shield, but not forming a suture with it. Dorsal 

 1 6 ; first ray longest, as loug as head ; second dorsal very small. 

 Anal I 7. Pectoral as long as head. Ventral as long as pectoral, 

 extending a little beyond origin of anal. Caudal peduncle depressed, 

 | total length. 22 dorsal and 18 ventral scutes. Brownish ; fins barred 

 black and white. 



Total length 120 millim. 



Alima B,., Upper Congo. — Type, in Paris Museum, examined. 



3G. PARAPHRACTURA. 



Bouleng. Ann. Mus. Congo, Zool. ii." p. 47 (1902). 



As in the preceding, but lower jaw with a band of small conical teeth, 

 interrupted at the symphysis. 



Ubanghi. 



.1. PARAPHRACTURA TENUICAUDA. 

 Bouleng. t. c. p. 48, pi. xiv. fig. 2. 



Depth of body 10 to 12 times in total length, length of head 5 to 5| 



r 



Fig. 378. 



«J3_~, ... 





Paraphraetura tenuicaada. 

 Type (A. M. C). f 



times. Head If to 1| times as long as broad, feebly rugose above, 

 covered with thin skin ; snout a little longer than postocular part of 



