FISHES. 
345 
Genus 5 .—TRACHYPTERUS.— Gouan. 
Generic Character. —Dorsal fin very much elongated, sup¬ 
ported by round rays, the anterior ones toothed; without an 
anal fin ; lateral line spinous; tail strongly serrated beneath. 
Genus 6.—GYMNO G A S TE R. — Brumich. 
Generic Character. —Teeth sharp and acute; provided with 
one long dorsal fin; pectoral fins small; no anal or ventral fins. 
Genus 7.—TRICPIIURUS.— Linnaeus. 
Generic Character .—Jaws acute, with long curved teeth; 
body elongated, compressed, sabre-shaped; dorsal fin the whole 
length of the body; destitute of ventral or anal fins; tail with a 
filamentary termination. 
Genus 8.—LEPIDOPUS. — Gouan. 
Generic Character. —Jaws pointed with acute teeth; body 
lengthened and compressed; dorsal fin long; with distinct 
caudal and anal fins; ventral fins represented by two acute 
moveable scales. 
Genus 9 STYLEPHORUS.— Shaw. 
Generic Character. — Snout elongated, retrousse; retractile 
towards the head by means of a membrane; eyes situated on 
peduncles ; body much elongated, and compressed ; pectoral fins 
small; destitute of ventral or anal fins ; tail terminated with 
a filamentous process, longer than the body. 
Stylepliorus chordatus .— The Cordated Stylephorous. 
Plate LXXX. fig. 3. 
Silvery, mottled with reddish-brown. Two feet long, exclu¬ 
sive of the filament. Inhabits the gulf of Mexico. 
TRIBE II.-GOBIOIDES. 
Genus 10.—BLENNIUS.— Linnaeus. 
Generic Character. —Head obtuse ; snout short; teeth long, 
equal, thickly set, and placed in a single row in each jaw ; head 
provided with fimbriated appendages; body elongated, com- 
