200 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
mottled black, tipped with white; pectoral black above and behind, pale below; anal pale, broadly 
tipped with blackish. 
Color in alcohol, bluish black above; side from upper level of eye abruptly bluish silvery; back 
crossed by 7 or 8 narrow darker cross-streaks; belly white, with a series of about 9 to 12 small 
roundish black spots, chiefly below the pectoral; cheek dusky; pectoral, dorsal, and caudal dusky, 
tips of the latter paler; anal whitish,- a little dusky at tip. A somewhat smaller example (4.5 inches 
long) has larger dark spots along middle of side above level of pectoral. 
This species is known to us from 2 small examples obtained in the market of Honolulu. It is 
related to Lagocephalus stellatus ( Donovan) of Europe ( Tetrodon lagocephalus of . Gunther, not of 
Linnseus) , but differs in the much shorter pectoral, more conspicuous spots, and rather greater extension 
of the prickly region of the breast. The types of Tetrodon lagocephalus Linnseus are reputed to have 
come from India. According to Linnaeus, this species had 10 dorsal and 8 anal rays. It may have 
been based on Lagocephalus sceleratus or some other East Indian species, but there seems to be no 
evidence that it was identical with the European Lagocephalus stellatus. In any event, the Hawaiian 
form seems different from any other yet known. 
Type, No. 50820, U. S. N. M. (field No. 03379), 5 inches long, obtained at Honolulu; cotype, No. 
7784, L. S. Jr. Univ. Mus. (field No. 534, paper tag), 4.5 inches long, also from Honolulu. 
Family 0STRACIID7E. The Trunk-fishes. 
46. Ostracion oahuensis Jordan & Evermann, new species. ‘ ‘ Morno Awaa .” 
Head 3.9 in length; depth 2.9; eye 2.9 in head; snout 1.2; preorbital 1.6; interorbital 1; D. 9; 
A. 9; P. 10; C. 10. 
Body 4-sided; dorsal side of carapace evenly convex, its greatest width one-fourth greater than 
head; lateral dorsal angles not trenchant, slightly convex anteriorly, then evenly convex; snout blunt, 
the anterior profile ascending abruptly then strongly convex in front of eyes; interorbital space nearly 
flat; cheek fiat; side of body concave, its width about equal to head; ventral keel prominent, evenb' 
convex; ventral surface nearly flat posteriorly, but little convex anteriorly, its greatest width 1.4 time 
length of head, its length just twice its width; gill-opening short, not exceeding two- thirds diamett i 
of eye; least width of anterior opening of carapace 1.75 in interorbital, or 1.5 times diameter of orbit, 
the depth nearly twice orbit; mouth small; teeth rich brown; least depth of posterior opening of 
carapace much less than width of anterior opening, equaling distance from lower edge of preorbital to 
pupil; length of caudal peduncle less than that of head, its depth 2.2 in its length; no spines anywhere. 
Dorsal fin high, its edge obliquely rounded, its length 1.3 in head; anal similar to dorsal, the edge 
rounded, its length 1.2 in dorsal; caudal slightly rounded, its rays nearly equal to head; pectoral with 
its free edge oblique, the rays successively shorter, length of fin equal to height of dorsal. 
Color in life, dark brown with blue tinges; interorbital space showing more or less golden; small 
whitish spots profusely covering entire dorsal surface; no spots on side of body or on face; no spots on 
ventral surface except a faint one of a slightly darker color than general gray color of surface; one 
longitudinal row of golden spots on each side of upper part of caudal peduncle from carapace to base 
of caudal fin; pectoral, anal, and dorsal fins with transverse rows of faint spots; caudal bluish black at 
base, white on posterior half; a broad light or yellowish area below eye; iris golden. 
Color in alcohol, rich brown above, the sides darker, and the ventral surface paler, brownish 
about margins, dusky yellowish within; entire back with numerous small, roundish, bluish-white spots; 
upper half of caudal peduncle with similar but larger spots; forehead and snout dark brown; lips 
brownish black; cheek dirty yellowish; sides and ventral surface wholly unspotted; base of caudal 
blackish, paler distally, the dark extending farthest on outer rays; other fins dusky, with some obscure 
brownish spots. 
This species is related to 0. camurum Jenkins, from which it differs in the smaller, more numerous 
spots on back, the entire absence of spots on side, the smaller size of the spots on the caudal peduncle, 
and the brighter yellow of the suborbital region. Only 2 specimens known, both from Honolulu. 
Type, No. 50668, U. S. N. M. (field No. 03443), a specimen 5.6 inches long, obtained by us at 
Honolulu, July 25, 1901. Cotype, No. 7478, L. S. Jr. Univ. Mus. (field No. 2156), an example 5.25 
inches long, collected at Honolulu, in 1898, by Dr. Wood. 
