504 



SILUKID^E. 



5. PHRACTUHA LONGICAUDA. 

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



Depth of body 14 times in total length, length of head 6| times. 

 Head 1} as long as broad, the slightly rugose skull covered with very 

 thin skin; snout half length of head, pointed, projecting a little beyond 

 mouth ; space between the two nostrils at nearly equal distance from 

 end of snout and from eye ; eye superolateral, its diameter 5-j times 

 in length of head, 1| in interocular width ; maxillary and outer man- 

 dibular barbels subequal, f length of head, inner mandibular \ ; occipital 



Fig. 376. 



Phractum lonyicauda. 

 Type. 



process about twice as long as broad, widely separated from the inter- 

 neural shield. Dorsal I 6j first ray longest, spinulose, as long as head ; 

 second dorsal very small, originating above last rays of anal. Anal II 6. 

 Pectoral slightly longer than head, not reaching root of ventral. Caudal 

 peduncle depressed, very slender, f- total length. 25 dorsal and 19 

 ventral shields, of which 11 are on caudal peduncle, the last 4 united 

 round the latter. Brownish above, speckled with dark brown, white 

 beneath ; fins spotted with blackish. 



Total length 77 millim. 



South Cameroon. 

 1. Type. Mvile It. G. L.Bates, Esq. (C). 



6. PHRACTURA ANSORGII. 

 Bouleng. Proc. Zool. Soc. 1901, ii. p. 623, pi. xxxvii. fig. 1. 



Depth of body 10 times in total length, length of head 5 times. 

 Head 1^ times as long as broad, rugo?e above, covered with thin skin ; a 

 median lidge on the snout, bifurcating towards the interorbital region ; 



