BULLETIN OF THE UNITED .STATES FISH COMMISSION. 
432 
353. Canthigaster oahuensis (Jenkins). Fig. 188. 
Head 3 in length; depth 2; eye 4 in head; snout 1.5; interorbital 3; I). 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 tin; caudal peduncle and posterior part of side naked; base of 
pectoral and other tins 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 
anti behind pectoral, mingled with the blue ones; 5 or 6 narrow brown lines running obliquely down¬ 
ward and forward on side of head, underneath which are brown spots and lines; radiating blue lines 
Fig. 188 .—Canthigantcr ua fl uent it (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 liases; 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. 
Tropiilic/itlu/a oahurnsis .Jenkins, Hull. I T . S. Fish Comm., XXII, 1902 (Sept. 23,1903),485, lig. 32, Honolulu (Type, No. 50G90, 
U. S. Nat. Mils.). 
