201 
12. Arius stormi (Blkr.). 
Cephalocassis Stormii Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 246. 
Hemiarius Stormi Bleeker, Atl. Ichth. II. 1862, p. 29. 
Arius stormii Giinther, Cat. Brit. Mus. V. 1864, p. 162. 
Peaamerh 7 MONIES Psi. LE>. Vi 6: 
Elongate; height below dorsal spine 5'/,, head about 3'/,, 
depressed, broader than high, its width about 11/, in its length. 
Headshields granular. Occipital process triangular, longer than 
broad, carinated, in old specimens mesially elevated, its side- 
borders straight or slightly concave, its truncate hindborder 
reaching the narrow crescentic 
basal bone of dorsal spine. 
Median fontanel somewhat tri- $3',20 , eee, 
é ts <2 ade 2 "09 
angular, its top ending at some Reel YH, go, 
distance of the occipital pro- Pe Re ee a 
: d wae! OBR fet a 60% 
cess; 2 rounded fontanels above ro, yatnditeo of dt, 
: iP, 09 oo, © ua 00 o0tes? 
the opercle. Dorsal profile slo- B08 Se URE, Gea ctte 
J A : 0% 2 0,°9 é So, 2 q098 50° ce 
ping down in a nearly straight esta sues oe, 
li h hat poi Tube totee Wilge 
ine to the somewhat pointed, 1008 CORE Bees Se 
strongly projecting snout. Eye Bei 
8—10, with a free orbital mar- 
gin, about 3 times in the inter- 
orbital space and 3 times or oY 
more in the snout. Humeral AP, 
process very narrow, origi- _ me : 
nating from a broad base, its eee tse oe Sea. he Cat: 
upper border concave. Maxill- 
ary barbels extend to the opercle, the mandibulary ones nearly 
to the hindborder of the gillmembrane, mental ones shorter. Soft 
dorsal equal to head from nostril, its very strong spine of 
equal length, granulated in front, serrated at both sides, the 
teeth looking upwards. Base of adipose fin longer than that 
of the dorsal, not yet twice in its distance from lastnamed, 
as long as the anal, the free margin of which is concave. 
Ventrals far distant from anal, shorter than pectorals, which 
are equal to head from middle of the eye, their strong flattened 
spine is shorter than the dorsal one, granulated in front, 
strongly serrated behind. Caudal deeply forked. Sharp teeth 
in an arcuate row in the jaws; those on the palate in four 
patches: two small median oval patches separated from each 
