432 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
353. Canting-aster oahuensis (Jenkins). Fig. 188. 
Head 3 in length; depth 2; eye 4 in head; snout 1.5; interorbital .3; D. 11; A. 10; C. 9; P. 16. 
Body short, deep, and compressed, the back narrow and strongly elevated; anterior profile rising 
pretty evenly to a point slightly posterior to vertical of gill-opening; interorbital nearly flat; snout 
long, flattened laterally; teeth strong, convex, the edge sharp; eye small, high up, the supraorbital 
prominent; gill-opening short, slightly oblique, less than diameter of eye; nostril small and inconspic- 
uous, but evident and perforate; caudal peduncle compressed, its least depth about 2 in head. 
Body covered more or less uniformly with small, short prickles, most prominent on snout, back, 
chin, cheek, belly, and under pectoral fin; caudal peduncle and posterior part of side naked; base of 
pectoral and other fins naked. 
Color of a nearly fresh example (No. 03528), 2.8 inches long, bluish gray, upper parts of head and 
body dusky; region from axil of pectoral fin to dorsal fin and backward to base of caudal and below 
for some distance below level of chin covered with small, bright blue spots; dark brown spots below 
and behind pectoral, mingled with the blue ones; 5 or 6 narrow brown lines running obliquely down- 
ward and forward on side of hear!, underneath which are brown spots and lines; radiating blue lines 
Fig. 188. — Canlhigaster oahaensis (Jenkins); from the type. 
from eye; 2 blue lines extending from upper posterior border of eye, diverging and then coming 
together at an eminence back of occiput in such a way as to include an irregular oval area about as 
large as eye; caudal dusky, with some small blue spots like those on body; dorsal and anal transpar- 
ent, with dusky bases; blue spots on base of dorsal, and some on base of anal. Color in alcohol of 
same specimen, dark olivaceous; body from gill-opening to caudal fin with numerous small, round, pale 
blush spots, among the lower of which are interspersed brownish spots; cheek with 4 or 5 narrow 
bluish lines separated by dark brown ones running upward and backward from chin to region in front 
of gill-opening; beneath and back of these are numerous brown spots and short wavy lines; short blue 
lines radiating forward and downward from eye; 2 similar blue lines running backward and upward 
from eye, coming together on nape and inclosing an oblong area about as large as eye; fins all dusky; 
dorsal black at base and with a few blue spots on base; basal third of anal blackish; base of pectoral 
black. 
This species is known only from the type (original No. 326), a specimen 4.5 inches long, obtained 
by Doctor Jenkins at Honolulu in 1889, and one example (No. 03528) 2.5 inches long, obtained by us 
at Honolulu, August 4, 1901. 
Tropidichtbys oahuensis Jenkins, Bull. U. S. Fish Comm., XXII, 1902 (Sept. 23, 1903), 485, fig. 32, Honolulu (Type, No. 50690, 
U. S. Nat. Mus.). 
