302 SILURIDJE. 



Snout shorter than eye, which is 8f times in length of head; jaws equal 

 in front; barbels subequal, extending to middle of body. Pectoral 

 slightly longer than bead, the spine not serrated. Anal 69-72, not 

 reaching base of caudal. Uniform yellowish. 



Total length 65 millim. 



Ganana R., Somaliland. — Types in Genoa Museum. 



13. PARAILIA. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 105 (1899), and Poiss. Bass. Congo, p. 275 

 (1901). 



Agrees with the preceding genus, except in the absence of the adipose 

 dorsal fin. Vertebrae 54 (10+44). 

 Congo, Niger. 

 Two species : — 



Longest barbels not more than twice length of head. 1. P. eongica, Blgr., p. 302. 

 Longest barbels nearly three times length of head . 2. P. longifilis, Blgr., p. 303. 



1. PARAILIA CONGICA. 

 Bouleng. 11. cc. pp. 106, 276, Ann. pi. xli. fig. 3. 



Depth of body 5 to b\ times in total length, length of head 6 to 7 

 times. Snout rounded, not projecting beyond mouth, shorter than eye, 

 which is 3^ to 3J times in length of head, and 1^ times in interocular 

 width ; latter slightly greater than width of mouth. Nasal barbel about 

 as long as head, maxillary barbel 1^, mandibular twice, latter close 



Parailia eongica. 

 Type (A. M. C). 



together on the chin. Gill-rakers long and slender, about 25 on lower 

 part of anterior arch. Pectoral obtusely pointed, as long as head, 

 extending beyond root of ventral, the spine moderately strong, not 

 serrated. Anal 80-92, reaching root of caudal ; latter forked. Pale 

 olive, dotted with blackish ; head and vertebral line dark brown. 



