500 



SILU1UD.E. 



times. Head 1^ times as long as broad ; skull a little rugose, covered 

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

 pointed, projecting beyond mouth ; space between the nostrils equally 

 distant from end of snout and eye ; latter directed upwards, 10 or 11 

 times in length of head and 2\ to 3 times in the interocular width ; 

 maxillary barbel ■§ length of head, reaching or nearly reaching gill- 

 opening, mandibular barbels much shorter. Occipital process 3 times 

 as long as broad, not reaching interneural shield. Dorsal I 7 ; first ray 



Fig. 372. 



PJtrachira bovei. 

 Lower Congo. 



longest, ^ longer than head ; second dorsal very small. Anal II 7. 

 Pectoral longer than head, as long as or a little longer than the 

 ventral; latter nearly reaching the anal. Caudal with crescentic notch. 

 Caudal peduncle depressed, ^ total length. 23-24 dorsal and 19 ventral 

 scutes, the last 5 united on caudal peduncle. Uniform yellowish brown 

 in spirit. 



Total length 110 millim. 



Lower Congo. — Type in Genoa Museum. 

 1. Ad. Lower Congo. Brussels Museum (E.). 



2. PHRACTUEA LINDICA. 

 Bouleng. Proc. Zool. Soc. 1902, i. p. 2G8, pi. xxviii. fig. 3. 



Depth of body 1\ to 8 times in total length, length of head 5 to h\ 

 times. Head 1^ to If times as long as broad, nearly smooth above, 

 covered with papillose skin ; snout \ length of head, obtusely pointed, 



