FISHES OF HAWAIIAN ISLANDS. 
239 
continuous, not notched; skull essentially as in Etelis, the flat interorbital area separated from the 
occipital by a transverse line of demarcation by which the median as well as the lateral crests are 
limited; frontals wide in front, and not cavernous; supraorbital margin crenate; periotic region 
much swollen outward and with the bones thin and polished; frontals behind with funnel-shaped 
foramina; preorbital moderate. 
Aprion has essentially the form of Lutianus with the skull of Eleiix. The single American 
species (.1. maerophthalmus) belongs to the subgenus Cluetoptems, which agrees with A. rinscens in 
the form of the skull, differing chiefly in the specific characters of deeper body, weaker teeth, and 
narrower preorbital. Species few; only one known from the Hawaiian Islands. 
Ap-rion Cuvier Valenciennes, Hist. Nat. POiss., VI, 5 1 : 1 . 1830 ( vircsccns ). 
Cfcl’tnptcrus Terminek Schlegel, Fauna Japoniea, Poiss . 7 S, ] - u ( dvbius ). 
Pri$tii>oinoiflcsB leelcer, Nat. Tijds. Ned. Ind., Ill, 1852, 57 1 ( tijpus ). 
PI at pininn Gill, Proc. Ac. Nat. S' - i. Phila. 1802,237 ( mra.r niannpht ha! tnan 
Sparapsis Kncr, Fiselic Mus. GodclYroy, 302, 1868 (dnnfjntus). 
183. Aprion virescens Cuvier A Valenciennes. “ f7,».” Fig. 99. 
Head 3.2 in length; depth 4.1; eye 5.4 in head; snout2.2; maxillary 2.45; mandible 2; preorbital4.8; 
interorbital 3; Br. 7; I), x, 11; A. n or iii, 8 ; scales 8-49-13. 
Body long, slender, and moderately compressed, the dorsal and ventral outlines gently curved; head 
large, much larger than deep: snout long and bluntly conic: mouth large, somewhat oblique, the 
maxillary reaching orbit, slipping for its entire length under the broad preorbital, its width at tip 
about 1.75 in eye; jaws co-ternlinous, the lower projecting somewhat in the young; eye rather high 
up, considerably above the axis of the body; interorbital space broad and flat; opercle ending in one 
Fig. 99 .—Aprion virescens Cuvier & Valenciennes; after Blceker. 
broad, flat, obscure spine; preoperele smooth; caudal peduncle long, its length slightly greater than 
that, of snout, its least width about, 1.75 in its least depth, which is 4 in head; dorsal fin continuous, 
not greatly notched, its origin behind base of pectoral, and midway between tip of snout and base of 
third dorsal ray: distance from origin of dorsal to base of first supporting caudal rays twice length of 
head; first dorsal rav short and slender, its length not exceeding diameter of pupil, fourth or fifth 
dorsal ray longest, about 3 in head, last dorsal ray produced, about one-third longer than preceding; 
first anal spine small, obscure, or entirely absent in large examples; third anal spine weak, its length 
less than diameter of eye; soft portion of anal similiar to that of dorsal: caudal widely forked, the 
lower lobe sometimes the longer, its length a little shorter than that of head; centrals short, reaching 
Scarcely half way to origin of anal, 1.9 in head; pectoral very short and broad, the length about 2.75 
in head; scales loose, large, somewhat deeper than long; lateral line fully developed and concurrent 
with the hack; cheek and opereles scaled, 5 rows on cheek; anal and soft dorsal naked; caudal scaled. 
Color in life (No. 03411), uniform light gray, the upper parts tinged with blue, which, on top 
of head to snout and about eye, becomes distinct dark blue, without distinct outline, gradually dis¬ 
appearing toward lower parts; lower parts much lighter, becoming almost white on ventral line; 3 
