FISHES OF HAWAIIAN ISLANDS. 
217 
167. Amia erythrina (Snyder). Plate 34, fig. 2 ." 
Head, including opercular flap, 2.5 in length; depth 2.5; depth of caudal peduncle 6; eye 2.7 
in head; snout 4.9; maxillary 2.2; D. vr, i, 9; A. n, 8; P. 14; scales 3-26-7, 5 in front of dorsal; width 
of body at pectorals about half the depth; caudal peduncle slender; distance between last anal ray 
and base of caudal 3.12 in length. 
Head short, snout blunt and rounded, lower jaw included; interorbital space flat, with a slight 
median elevation, width equal to diameter of eye; mouth oblique, the maxillary extending to the 
posterior border of eye, the expanded portion with a slightly convex posterior border; both margins of 
preopeicle weakly serrated; teeth on jaws, vomer, and palatines, the latter covering a small anterior 
area of bones; gillrakers on vertical limb of arch mere papillae, except along slender one at angle; 
those on horizontal limb long and slender near the angle, gradually reduced in length to near middle 
of limb, where they are short and rudimentary; scales weakly ctenoid; cheeks and opercles with scales; 
first dorsal spine short and weak; second very strong, its length 1.67 in head, when depressed reaching 
base of second dorsal ray; remaining spines graduated in length to the last, which is about 3.3 in 
second; spine of soft dorsal very slender, equal in length to fourth spine of first dorsal; longest rays 
1.58 in head; anal rays about equal in length to those of dorsal; caudal 0.3 of the length, its margin 
with a deep notch; pectoral 4.5 in length, ventrals 4.5. 
Color reddish orange, scales edged with a narrow band of a somewhat deeper hue; occiput and a 
spot on opercle dusky; a small black spot at origin of spinous dorsal; minute dark specks on nape, 
along base of dorsals, at base of caudal, on breast and on opercles; fins immaculate. 
Distinguished from the other Hawaiian species by the bright reddish color, the absence-of large 
spots or bars on the body and fins, and by having the second dorsal spine largest. 
Type, No. 50876, U. S. N. M., Puako Bay, Hawaii. Length 1.4 inches. Other specimens, 
among which are cotypes, No. 7733, L. S. Jr. Univ. Mus., are from Honolulu; Hanalei Bay, Kauai; 
and Laysan Island. The species was also abtained in Samoa. 
Apogon erytlirinus Snyder, Bull. U. S. Fish Comm., XXII, 1902 (Jan. 19, 1904), 526, pi. 9, fig. 17, Puako Bay, Hawaii. 
Genus 122. ARIOMMA Jordan & Snyder. 
Body not greatly compressed; head large; caudal peduncle slender, cylindrical; eyes large, with 
thin adipose lids; mouth small, the maxillary short, broad, rounded posteriorly; teeth on jaws, none 
on vomer and palatines; pseudobranchiae present; preopercle smooth; head and body with scales, 
about 55 in lateral series; soft dorsal and anal elongate. 
Only one species known. 
Ariomma Jordan & Snyder, Proe. U. S. Nat. Mus., XXVII, 1904, 942 (lurida). 
168. Ariomma lurida Jordan & Snyder. Plate 37. 
Head 2.9 in length; depth 4; eye 3 in head; snout 3.3; interorbital width 4; depth of caudal 
peduncle 7; D. x, 17; A. 15; P. 20; scales in lateral series 55 or more. 
Width of body a little greater than half its greatest depth; caudal peduncle cylindrical and mark- 
edly slender; interorbital space slightly convex; eye extremely large, with thin, transparent adipose 
lids, the posterior extending to edge of pupil, the anterior not more than one-fifth as wide; nostrils 
near tip of snout; lower jaw projecting a little beyond the upper; length of maxillary equal to inter- 
orbital width; jaws each with a single row of slender, minute teeth, those on lower jaw curved back- 
ward; no teeth on vomer or palatines; pseudobranchiae large; gillrakers on first arch 9 + 19, those near 
the angle long and slender, the others growing successively shorter toward either end of arch; pre- 
opercle entire; scales probably between 55 and 65 in a lateral series, probably present on head, includ- 
ing upper part of snout and cheeks, scale-pits being present on occiput and below eye; lateral line 
probably developed, its anterior end belo% base of dorsal a distance equal to diameter of pupil; origin 
of dorsal above base of pectoral; soft dorsal and anal coterminous, the length of caudal peduncle 
measured to bases of upper and lower rays equal to length of maxillary; ventrals inserted on a ver- 
tical through second or third dorsal spine; caudal fin probably concave or forked. Whether the 
Apogon erythrinus on plate. 
