276 
long axes of which converge more or 
less anteriorly. 
#. patches implanted upon a movable 
cushion )) ky rane Soy ephiecmeaurn ct fh A, froggatti p. 307. 
@. patches not movable. 
a’. long axes of patches, which are 
slightly longer than broad, meet 
anteriorly in an acute angle... A. truncatus p. 308. 
f’. ovate patches twice as long as 
broad, their long axes meeting 
anteriorly in a very blunt angle. 4. macronotacanthus p. 309. 
c. teeth on palate in more or less triangular 
patches, the base of which is directed 
anteriorly. 
a, headshields granular, pectoral spine 
shorter than that of the dorsal . . . A. coelatus p. 310. 
@. headshields smooth or nearly so, 
pectoral spine as long as that of the 
dorsal. 
a’. head 3'/,—31/g, dorsal spine shor- 
ter than head without snout, eye 
ADOUW NG siete Mahe tala Ao seen rs EULA nS 2s 
@’. head 31/3, dorsal spine longer than 
head without snout, eye 8—9. . A. doriae p. 313. 
. head about 4, dorsal spine equal 
to head from nostril, eye 4—41/, A. venosus p. 314. 
1. Arius crossocheilus Blkr. 
Arius crossocheilos Bleeker, Nat. & Geneesk. Arch. Ned. Ind. IIT (2). 1846, p. 137. 
Arius tonggol Bleeker, Nat. & Geneesk. Arch. Ned. Ind. III (2). 1846, p. 292. 
Ariodes tonggol Bleeker, Ichth. Arch. Ind. Prod. I Siluri, 1858, p. 83. — Atl. 
Ichth. IT. 1862, p. 39. 
Arius tonggol Giinther, Cat. Brit. Mus. V. 1864, p. 164. 
B. 6; Disa. 73 A. lithe | Ea ibis VEG! 
Elongate, height about 5, head 3'/,, much broader than 
high, its width about ?/, of its length. Headshields with radiat- 
ing roughened or granulated lines. The granulated occipital 
process is triangular, somewhat longer than broad at its base, 
elevated mesially and less than twice as long as broad in its 
middle, its sides convex, the narrow hindborder touches the 
granulated narrow basal bone of the dorsal, which has wing- 
1) according to J, Douglas Ogilby. 
