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330.— ACA.XTHl RUS Bloch A Schneider. 
i Aenmmt^ Gchr.: vocnn.) 
(Eorskil: Bloch A Schneider. lehthyol. 1 h) 1. -211: type CitrUditM Bloch. 
Body ovate oolong, compressed, covered with minate ctenoid scales. 
Mouth rather small, with broad lobate or serrate incisors, which are 
sometimes movable. A movable spine in a groove on each side of taih 
One dorsal fin, low and long, with 7-0 sometimes fewer spines: usually 
a procnmbent spine before the dorsal: anal with 2 or 3 spines. Ven- 
tral rays I, 5. Caudal emarginate. Gill openings moderate, oblique, 
separated by a broad isthmus: operculum very short: preop>ercle ob- 
lique, with entire edge. Branchiostegals 3. Intestinal canal elor.iraie. 
Vertebne 9 -{- 13. spine: taiLi 
S6S A. < himrsus BL A Seim. — Doctor-n^k, 
Brownish: operc-ie with a black margin: sometimes a whitish band 
across tail at base of caudal: ^ides with dark transverse bands: vertieal 
fins with oblique. i>arallel. dark srreaiks. Body oblong. c*ompressed. 
and not greatly elevated: profile little convex, somewhat undulated. 
Vertical fins high : caudal moderately emarginate. Heiid 3^ in length: 
depth 2. D. IX. '23: A. III. 23. We.-st Indies: occasional northward. 
V Bloch A Schneider. *214 : Gunther, iii. in port: Poey. Anales S«?c. Hiit. XiE. 
Espagn. IssX *245. > 
967. A. COeruletlS Bloch A Schneider. — Blue Sarj/eo*.* BjrAer». 
Deep bluish brown, with undulating pale blue longitutlinal lines, 
especially on the dorsal and anal fins, where they become straight and 
oblique. Upper profile of snout slightly concave. Caudal fin more or 
less deeply forked, the lobes bordered with pale in the adult: caudal 
spine glassy, amber-colored: oi>ercles striate. Body very deep. Depth 
in length. D. IX. 2'^ : A. III. 25 West Indies: oc-casional northward. 
(Bloch A Schneider. liOI. *214: Poey. Anah Sc-c. Hi?:. Xat. Espagn. *244: _I<.*tti»- 
tkmrtis nigricait-1 Cnxjde. BnlL U. S. Nat. v. 42 i not of L.^: AcaMtkur^ 
Giinther, iii, ool>.) 
Family C.— TRACHYPTERID^E. 
The Kimj-of tke-HerriHgi*. ’ 
Body elongate, strongly compare ssed. naked, the skin smooth or 
prickly. Lateral line present. Head short, the mouth rather small, 
terminal, with feeble teeth: premaxilltmes protractile: opercTes un- 
armed. Eye large, lateral. Brauchiosreg.ils G. GiU-membranes sepa- 
