298 MR. C. TATE REGAN OX [NoV, 4, 



spines or tubercles. About 70 in a longitudinal series from the 

 gill-oj^ening to the caudal, about 20 in an oblique series from 

 the base of the pectoral to the vent, and about 50 in an oblique 

 series from the origin of the dorsal to the ventral spine. 



Yellowish-brown, with darker dots and points on the body and 

 fins. Lips white, with a semicircular white fold behind them on 

 each side. 



Pacific, Total length 135 mm. 



Balistes capriscus has rather larger scales, and in a specimen 

 of the same size the eye-diameter is about 3| times in the length 

 of snout, 1| times in the interorbital width, and there are also 

 other differences. 



PSEUDOMONACANTHUS PUNCTULATUS, n. sp. (Plate XXY. fig. 2.) 



Depth of body 2| times in the total length, length of head 



3 times. Snoiit nearly straight, but very slightly concave, about 



4 times as long as the eye-diameter, which is | of the interorbital 

 width. Gill-opening 1| times as long as the eye-diameter, its 

 upper and lower ends below the posterior and anterior margin of 

 the eye respectively. D. II, 36. A. 32. Dorsal spine slightly in 

 advance of the middle of the eye, with vertical rows of moderate- 

 sized granules or tubercles anteriorly, the two rows on each side 

 of the median row enlarged, but not forming distinct barbs ; 

 each lateral posterior edge with a row of conical tubei'cles (barbs) 

 in its lower half ; the length of the spine 1|- times in the length 

 of head. Second ray of spinous dorsal not prominent. Soft 

 dorsal and anal similar, rounded, the longest ray | the length of 

 head. Pectoral as long as the gill-opening. Caudal rounded, 

 half the length of head. Caudal peduncle deeper than long, with 

 two pairs of small curved spines with points directed forward on 

 each side. Ventral sj)ine moderate, barbed. Scales represented 

 by minute osseous granules. 



Brown, with traces of numerous small darker spots on the 

 sides. Caudal brownish, other fins immaculate. 



Closely allied to Pseudomonacanthii,s 'pardalis Riipp., which 

 has a somewhat more declivous concave snout, tubercles on dorsal 

 spine minute, slightly shorter head, narrower gill - opening, 

 narrower interorbital space, &c. 



A single specimen, 190 mm. in length, from Tahiti. 



PSEUDOMONACANTHUS MULTIMACULATUS, n. Sp. (Plate XXY. 



fig. 1.) 



Depth of body 2^ times in the total length, length of head 

 3 times. Snout slightly concave, about 3| times as long as the 

 eye- diameter, which is | of the interorbital width. Gill-opening 

 1 i times as long as the eye-diameter, its upper and lower ends 

 below the posterior and anterior margins of the eye respectively. 

 D. II, 36. A. 32. Dorsal spine in advance of the middle of the 

 eye, \\ times in the length of head, armed almost exactly as in 

 the preceding species, but with the anterior double row of 



