1904.] NATURAL SCIENCES OF PHILADELPHIA. 231 



dorsal' profile, and posteriorly running a little high along side of caudal 

 peduncle to base of caudal, but not extending on base of fin. 



Spinous dorsal inserted nearly opposite origin of pectoral, fin rather 

 low, margin notched, first and tenth spines about equal, last shortest, 

 and third to fifth subequal and longest. Membrane connecting dor- 

 sals distinct. Soft dorsal inserted nearer base of caudal than origin 

 of pectoral, and elevated in front. Spino\is anal apparently inserted 

 a little behind origin of soft dorsal, third spine longest, broad, and not 

 extending as far as tip of second anal ray. Fourth anal spine slender. 

 Second anal ray apparently longest, first but little shorter. Caudal 

 forked, damaged. Pectoral somewhat small, upper rays longest. 

 Ventral apparently inserted behind pectoral, rather broad. Spine 

 about If in fin. 



Color of dried skin straw-brown. About 3 olivaceous longitudinal 

 bands parallel with and above lateral line. Six others of same color 

 longitudinally below lateral line. They are all rather broad, spaces 

 between but little narrower than their own width. Fins and iris dull 

 brown like general body-color. 



Length 11 inches. 



Type No. 23,277, A. N. S. P. Thornton Island, Polynesia. C. D. 

 Voy. Presented by Prof. E. D. Cope. 



Three examples. This species apparently approaches Holocenthrus 

 poecUoptcrus (Bleeker), but differs in color, as there are no traces of 

 spots on spinous dorsal. 



(//o/uT, many; t-^To?, island ; Polynesia.) 



Holocentlirus thorntonensis sp. nov. Fig. 4. 



Holocentrus microstomus Fowler, Proc. Acad. Nat. Sci. Phila., 1901, p. 325. 

 Thornton Island. South Pacific. CC D. Voy.) (Not of Gunther.) 



Head 2f ; depth 3; D. XI, 12?; A. IV, 7; scales 37 in lateral line to 

 base of caudal; 3^ scales between origin of spinous dorsal and lateral 

 line; 3 scales between middle of spinous dorsal and lateral line; 7 

 scales below lateral line to middle of belly in a vertical series ; snout 4|- 

 in head; eye 2f ; maxillary 2^; interorbital space 3; third dorsal spine 

 2^0 ', third anal spine 2; least depth of caudal peduncle 4; pectoral 2^; 

 ventral If. 



Body elongate, rather ellipsoid, profiles about evenly convex and 

 greatest depth near front of spinous dorsal. Caudal peduncle com- 

 pressed, its least depth about f its length. 



Head deep, compressed, upper profile a little more convex than 

 lower. Snout short, broad, forming a sharp protruding point in front. 

 Eye large, circular. Mouth small, well inferior. Maxillary small, 



