Fishes of the South Pacific. 73 



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. 



Family BALISTIM). 

 Xanthichthys rivulatus (Riippell). 



One specimen, No. 10S5 B. M., from Fate, 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- 

 bital space; D. in, 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 flavitnarginatus Riippell. 



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 Lacepede. 

 {Balistes niger Mungo Park.) 



Three specimens, Nos. 1076, 1077* and 933 B. M., from Fate, 

 New Hebrides. 



