N0.126C. LABROID FISHES OF JAPAN— JORDAN AND SNYDER. 597 
I. AMPHIPRION FRENATUS Brevoort. 
Amphiprion frenatn.': Brevoort, Exped. Japan, 1856, p. 263, pi. vi, fig. 4; 
Nafa, Okinawa Islands, Riukiu Archipelago. — Gill, Proc. Acad. Nat. Sci. 
Phila., 1859, p. 148; Shimoda. — Jordan and Snyder, Proc. U. S. Nat. Mus., 
1900, p. 752; Okinawa, Shimoda. 
Amphiprion tricolor IsHiKAW A, Prel. Cat., 1897, p. 31; Riukiu, not of Giinther. 
Head ^ in length; depth l^%; depth of caudal peduncle 6; eye 3^ 
in head; interorl)ital space 2f ; snout 3i; D. IX, 19; A. II, 15; scales 
in lateral line 46; in series between lateral and insertion of dorsal T; 
between lateral line and insertion of anal 20. 
Body short, deep, and compressed; head rounded anteriorly, the 
snout short; interorbital space convex. Mouth almost vertical, the 
lower jaw projecting-; maxillary not extending to eye, suborbital with 
a strong spine on anterior part, posterior to which is a row of shorter 
spines; preopercle strongly serrate; opercle, interopercle, and sub- 
operele with radiating ridges which end in sharp spines. Gill-rakers 
on tirst arch about 17, long and slender near middle of arch, growing 
very short toward the ends. 
Head and body covered with ctenoid scales; a naked area on inter- 
orbital space, snout, and chin; very small scales extending outward on 
dorsal, anal, and caudal tins. Lateral line incomplete, ending below 
base of eleventh dorsal ray. Fourth dorsal spine longest, 2I5 in head; 
posterior rays of dorsal and anal longest, If in head. Caudal rounded, 
1| in head. Pectorals and ventrals rounded. 
Color in spirits, bright chocolate brown without bands or stripes, 
lighter below% in the region of the pectoral tins and on snout and chin; 
a sharply defined bluish-gray collar bordered by a narrow band of 
pearly white and this in turn by browniish black, the width about equal 
to diameter of orbit, passing upward from the subopercle, behind the 
eye and over the back, just anterior to base of first dorsal spine. Fins 
yellowish, the spine of ventral brown. 
This description is of a specimen about 92 millimeters long from 
Okinawa. Two other specimens taken at Shimoda by Mr. Morrow, of 
Commodore Perry's expedition, w^ere also examined. These were the 
basis of GilFs account of Anqjluprion frenatus^ a species originally 
described from Okinawa. They have the body of a pale, yellowish- 
l)rown color with 3 light lateral bands extending along the sides, 
wider apart and broader anteriorly, converging and l)ecoming narrower 
on the caudal peduncle; many scales of the body have each a small 
light spot. The width of the light collar varies somewhat in each 
individual. The Shimoda specimens measure as follows: Depth 0.56 
of length, scales 7^8-20, D. IX, 19, A. II, 14; depth 0.60, scales 
7-47-20, D. IX, 17, A. II. 14. 
Though these specimens differ somewhat in color and in the depth 
of body, they probably all belong to the same species. From Amphi- 
prhn /naerofitomas, the most nearly related species, described by 
