FISHES. 
353 
duced j teeth numerous, thick set; operculi smooth; body 
oval. 
Genus 49. — CICHLA. — Schneider. 
Generic Character. — Mouth wide, protractile; teeth numer¬ 
ous, small, and thick set; operculi smooth. 
Genus 50. — PRISTOPOMUS. — Cuvier. 
Generic Character .—Mouth contracted, with numerous, small, 
thick set teeth ; body deep, compressed, with large scales. 
Genus 51.—SCOLOPSIS— Cuvier. 
Generic Character .—Mouth small; teeth numerous, small, 
and thick set; margin of the pre-operculum dentated ; body com¬ 
pressed, deep; the suborbitary bone dentated and spinous be¬ 
hind. 
Genus 52.—DIA GRAMMA. — Cuvier. 
Generic Character .—Head orbicular; mouth contracted; 
teeth small, numerous, and thick set; pre-operculum somewhat 
dentated, with six pores under the lower jaw; body oblong. 
Genus 53. — CHEILODACTYLUS.— Lacepede. 
Generic Character .—With a double and extensible upper lip ; 
pre-operculum smooth ; teeth small and thick set; body and tail 
compressed; last ray of the pectoral fin elongated beyond the 
uniting membrane ; one dorsal fin. 
Genus 54.—MIC R O P T E R U S.— Lacepede. 
Generic Character. —Mouth cleft; teeth thick set; operculum 
with a flat spine ; last soft rays of the dorsal fin detached into a 
small rudimentary fin. 
Genus 55.—G R A M MI ST E S. — Cuvier. 
Generic Character _Mouth cleft; teeth numerous, thick set, 
pre-operculi and operculi, with two or three spines each ; anal fin 
without a spine ; scales excessively small. 
Genus 56. - P RIA C A NT H US.— Cuvier. 
Generic Character. —Lower jaw extending beyond the upper 
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