BULLETIN OF THE UNITED STATES FISH COMMISSION. 
334 
what smaller than those on side; cheek with about 6 vertical rows of somewhat smaller scales, 2 scales 
on upper end of opcrcle, rest of head naked; lateral line beginning at upper end of gill-opening, curv¬ 
ing upward for 4 pores, thence following contour of back, until under base of last dorsal ray, where it 
drops down for 2 scales and continues to base of caudal. 
Color in life, light drab, the posterior portion of each scale white or whitish; a large dark-brown 
blotch as large as head on middle portion of body, in which the posterior half of each scale is white; 
first 2 dorsal spines dusky, no distinct markings on fins. 
Another specimen ( No. 03027) was white, centers of scales anteriorly dusky, a large black blotch 
on side above tip of pectoral, covering 23 to 25 scales; preocular part of head bluish black; dorsal, 
anal, and ventrals white; caudal dusky white; pectoral white with slight yellowish shade. One 
specimen (No. 03447) when fresh dead, was gray with bluish tinge on body and fins; small black spot 
on tip of anterior dorsal; large black area on side of body 7 scales wide and about 7 scales deep; below 
this an area of scales bluish with white margins, this extending a little farther backward than the 
black area. 
This species is sometimes very dark, almost black, as is shown by 3 specimens from Ililo, one 
of which (No. 03478) was in life dirty olive, paler mesially, the head livid dusky, the anterior part of 
body to tip of pectoral black; fins all mottled blackish, no markings; very faint paler lines below, and 
a very faint shade of olive in places; no real markings, save the black anterior half of body. A 
smaller specimen, probably a male, had lower half of black area to front of anal deep violet bine. 
Color in alcohol, yellowish white, head, nape, and breast with bluish rosy wash; middle of side, 
with a large brownish-black blotch, about 6 scales in length and 9 in depth, the distal portion of each 
scale whitish; detached dorsal spines dark, rest of dorsal and anal pale, purplish and orange at base; 
caudal dirty whitish distally, purplish at base; pectoral and ventrals pale yellowish white; eye with 
a silvery ring around pupil, surrounded by light brassy, annexed by purplish blue. 
This species is known only from the type and 15 other .specimens obtained at Hilo and Honolulu'; 
these are 4.75 to 8.75 inches in length. 
Ifauiptcronotiis umbn'latus Ji'iikins. Bull. t T , S. Fish Comm., XIX, 1899 (Aug. (10, 1900), 53, lig. 10, Honolulu (type,No. 6135, 
Stanford Univ. Coll. Dr. Jenkins); Jenkins, op. oit. XXII, 1902 (Sept. 23, 1903), 161 (Honolulu). 
265. Hemipteronotus baldwini Jordan & Evermann. Plate XXXIX. 
Head 3.25 in length; depth 3; eye 5.75 in head; snout 1.75; maxillary 3; preorbital 2.2; inter- 
orbital 4.8; D. ti-viu, 13; A. in, 13; scales 3-27-9. 
Body moderately short and deep, greatly compressed; head slightly deeper than long; anterior 
profile nearly vertical from mouth to front of eye, sharply cultratc; dorsal outline gently convex, sloping, 
to the deep caudal peduncle; ventral outline less convex; caudal peduncle very narrow, the depth 
2.25 in head; mouth small, horizontal, the maxillary nearly reaching vertical of orbit; the jaws equal, 
each provided anteriorly with a pair of strong curved canines and laterally with a single row of short 
close-set conic teeth; lower jaw strong, its outline very convex; preorbital nearly vertical and very 
deep; preopercle and opercle smooth, with membranous edges, the latter produced somewhat in a 
broad rounded flap; origin of dorsal but little posterior to orbit, far in advance of base of ventrals; 
first 2 dorsal spines somewhat removed from third but connected to it hv a low membrane, their length 
scarcely greater than the gape of mouth; remaining dorsal spines short and weak, scarcely equaling 
gape; soft dorsal low, the rays slightly longer than the spines; anal similar to soft dorsal, rays some¬ 
what longer; caudal slightly convex, rays 2 in head; outer ray of each ventral somewhat produced, 
not. reaching vent, the length about 1.9 in head; pectoral broad, the longest rays 1.7 in head; scales 
large, thin, smooth, firmly attached, those on breast somewhat reduced; head naked, except about 4 
series of small scales extending from eye downward to level of mouth; lateral line curving abruptly 
upward from upper, end of gill-opening, following contour of back to the scale under third dorsal ray 
from last, where it drops 3 rows and continues to base of caudal, the pores simple, unbranched. 
Description based upon the type, No. 50644, U. 8. Nat. Mus. (field No. 03414), a male example, 
8.5 inches long, obtained at Honolulu. 
Color in life (field No. 03123) pale, yellowish white over head and body; a diffuse lemon-yellow 
blotch under and above pectoral; a large brownish-black blotch on lateral line under, seventh to tenth 
dorsal spines; dorsal fin vellowish-white, tip of detached part with a jet-black crescent (this marking 
variable in position, sometimes being farther posterior), rest of fin faintly mottled with yellowish 
