774 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Body elongate, compressed behind. Head more or less depressed. 

 Snout prominent, sometimes projecting and gibbous. Eyes with or 

 without free edge. Mouth transverse, moderate to small. Maxillary, 

 mandibular, and mental barbels slender, rather long. Each jaw with 

 band of villiform teeth, palate edentulous. Nostrils close together, 

 without barbel. Head shields exposed or more or less covered with 

 skin. Occipital process keeled or winged, touches basal bone of 

 dorsal spine. Gill membranes united, joined to isthmus along median 

 line, leaving narrow free edge. Gill rakers moderate, short, more or 

 less conic. Branchiostegals 5 or 6. Dorsal with pointed spine and 7 

 rays, origin midway between paired fins or nearer ventrals. Adipose 

 fin moderate or short, origin above or slightly before anal. Anal 

 rays 15 to 12. Caudal deeply forked. Pectorals with sharp spine 

 and axillary pore present. Ventral rays 6. 



A small genus of freshwater catfishes confined to the East Indies 

 and one species in the Philippines. Apparently all live in fresh 

 water. 



HEMIPIMELODUS MANILLENSIS (Valenciennes) 



Pimelodus manillensis Valenciennes, Hist. Nat. Poiss., vol. 15, p. 192, 1840 



(type locality: Manila). 

 Hemipimelodus manillensis Herre, Philippine Journ. Sci., vol. 31, p. 410, 1926 



(Laguna de Bay) ; Fishes Herre Philippine Exped., 1931, p. 22, 1934 



(Laguna de Bay). — Roxas and Maktin, Dept. Agr. Comm. Manila, Tech. 



Bull. 6, p. 44, 1937 (reference). 



Depth 51/10 to 59/10 ; head 3 to 31/3, width 11/2. Snout 2% in. head, 

 projects broadly rounded; eye 6% to 71/5, 2i/^ to 21/2 in snout, 3 in 

 interorbital ; maxillary barbel reaches or nearly reaches hind edge 

 of head, mandibular reaches gill opening or beyond, mental scarcely 

 % of maxillary ; mouth rather small, '2% in head, lower jaw shorter 

 but upper teeth not exposed; upper teeth in narrow curved band, 

 broadest at ends, width 6 in length; lower teeth in narrower longer 

 band, widest medially and tapering at both ends ; head finely granu- 

 late above, occipital process keeled, thickly covered with small gran- 

 ules, much longer than broad, side sinuous, notched at apex; basal 

 bone of dorsal spine short, curved, narrow, granulose; median fon- 

 tanel very long and nearly reaches occipital process. Gill rakers 

 6 + 12, slender, % or more of eye diameter. 



Dorsal 1% to 1% in head; front edge of flattened spine granulose 

 below and becomes serrate near tip, hind edge serrate on upper % 

 and remainder smooth, length 1% to l%o in head; adipose fin base 

 !■% to 2 in dorsal base or 2l^ to 2% in anal base; A. 18 to 20; caudal 

 deeply lobed, lobes acutely pointed, upper longer or 3% to 3% times 



