336 
FISHES. 
skin ; mouth terminal; jaws provided with six cirri; one adipose 
dorsal fin, situated near the tail; skin slimy. 
Genus 68_PL ATYSTACUS.— Bloch. 
Generic Character. —Head depressed, with six or eight cirri; 
bones of the operculum fixed to the chest; first ray of the pec¬ 
toral fins strongly serrated; one dorsal fin, with the first ray 
slender; anal fin very long, extending the whole length of the 
tail; tail long and compressed. 
Platystacus chaca. — The Chaca Platystacus. 
Plate JLXXVIII. fig. 8. 
Skin with scattered fleshy projections, ragged on the surface; 
clouded with green and black above, and black and yellow be¬ 
neath ; fins spotted with black; head much depressed and blunt. 
Eight inches long. Inhabits the Ganges. 
Genus 69.—HYPOSTOMUS .-—Lacepede. 
Generic Character. —Mouth situated beneath ; branchial mem¬ 
brane with four rays; lips extensible, with slight cirri on both 
sides; upper parts and tail covered with bony plates ; two dor¬ 
sal fins, the second small, with a single ray. 
Hypostomus flavus. — The Yellow Hypostomus. 
Plate LXXIX. fig. 1. 
Orange-yellow, spotted with brown ; tail with bars of the 
same colour; head large, rough with small points. Ten inches 
long. Inhabits the Indian seas. 
ORDER VII. 
MALACOPTERYGII SUBRACHIATI. 
Jaws entire ; branchiae pectinated ; ventral fins either before 
the pectorals, between them, or a little behind. 
TRIBE I.-GADITES. 
Genus 1.—MORRHUA.— Cuvier. 
Generic Character. — Head compressed ; eyes distant, situated 
