Fishes of the South Pacific. | Hie 
Color in spirits, a dull grayish brown, thorax and head much 
darker; anterior ray of pectoral black; fins yellowish white. 
One specimen, No. 1325 (Fig. 19) B.M., from Alu, one of the 
Solomon Ids. Length 7 in. 
Famity BALISTIDA. 
Xanthichthys rivulatus (Rtppell). 
One specimen, No. 1085 B. M., from Faté, New Hebrides. 
In life the lines marking this species are bluish; in spirits 
they become light brownish. 
Balistes fuscus Bloch. 
Depth 2; head 3; eye 6 in head, 5 in snout, and 2 in interor- 
imtaespace: I). rit, 24; A. 23: 
Body compressed, deep, covered with roughened scales, some 
osseous scutes behind gill openings; caudal peduncle without 
spines on its sides, its depth equal to interorbital space; a groove 
in front of eye; mouth rather small, teeth large, the anterior ones 
almost like canines. Fins: spinous dorsal with its first spine en- 
larged, its upper anterior half much roughened, its length 1.80 in 
base of soft dorsal; base of soft dorsal equal to head, base of anal 
not quite so long; pectorals equal in length to first dorsal spine; 
ventrals consisting of a single modified spine and some roughened 
corrugations; caudal deeply lunate, the margins greatly prolonged, 
the upper much the longest, the outer ray greater than length of 
head. 
Color in life, blue, with a wash of green; dorsal blue, with a 
pink tip. 
Color in spirits, uniform greenish brown, the soft fins tipped 
with white. 
One specimen, No. 1359 B. M., from Tahiti. Length 21 in. 
Balistes vidua Richardson. 
One specimen, No. 2132 B. M., Nukuhiva, Marquesas Ids. 
Balistes flavimarginatus Riuppell. 
One specimen, No. 1290 B. M., from Shortland Id., Solomons. 
Balistes bursa Bloch. 
Two specimens, Nos. 2130, 2131 B. M., from Nukuhiva, Mar- 
quesas Ids. 
Balistes chrysopterus Lacépede. 
(Balistes niger Mungo Park.) 
Three specimens, Nos. 1076, 1077* and 933 B. M., from Fate, 
New Hebrides. 
