368 
FISHES. 
row, and having crenulated edges; body compressed, broader than 
long, scales small; a spine at the base of the tail on each side. 
Genus 131.—A S PIS U R U S.— Lacepede. 
Generic Character .—Snout projecting; mouth small with 
crenulated teeth; body compressed, higher than broad; dorsal fin 
covered with small scales ; tail with a hard plate on each side. 
Genus 135.—PRION UR US.— Lacepede. 
Generic Character. —Teeth crenulated ; body compressed, with 
numerous spines on each side of the tail. 
Genus 136.—NASEUS.— Lacepede. 
Generic Character .—Nose provided with a horn-like protu¬ 
berance ; teeth closely set in a single row; body and tail with 
rough shagreened skin; extremity of the tail with two shield-like 
plates on each side. 
TRIBE VI.-SQUAMIPENNES. 
Genus 137.— CHiETODON. — Cuvier. 
Generic Character. —With crowded bristly teeth; body greatly 
compressed, oval, very deep ; dorsal and anal fins covered with 
scales; dorsal spines nearly equal; operculi smooth. 
Genus 138.—CHELMON.— Cuvier. 
Generic Character. — Snout elongated into a narrow cylindri- 
cal beak; teeth crowded and bristly; body greatly compressed, 
which with the dorsal and anal fin is covered with scales. 
Genus 139. —PL AT AX. — Cuvier. 
Generic Character —Snout blunt; teeth small, numerous, 
and thick set; body greatly deeper than long; dorsal and anal 
fins extremely long and acute ; spines of the dorsal fin concealed 
in its elevated edge, and the first ray greatly elongated. 
Platax Teira .— The Long-Finned Ch^iodon. 
Plate LXXXII. fig. 10. 
Silvery white, with three black bands; dorsal and anal fins 
extremely long and arcuated ; ventral fins black. Inhabits the 
seas of Arabia and India. 
