XKW SI'KCIKS OF PHILU'I'INE FISHKS. 517 



unmarked except tlie upper surface of tlie first ray of pectorals which i;^ 

 gray, and the ventrals, which have some dusky on their posterioi' third. 



Type is No. 5080 taken at Balahae Ishuid, P. T., 6 August, 1908. 

 Length, 220 millimeters. 



Family POMACENTRID.E. The Damsel-fishes. 



Pomacentrus tropicus' Seale. sp. nov. Plate Xll, lig. 1. (IJanigsahasa.) 



Head 3; depth 1.9-5; dorsal XIII, 14; anal II, 14; scales 24, eighteen 

 pores in lateral line, 12 in vertical series; eye 3 in head; snout 3.75; 

 interorhital space 2.75; maxillary 3.50; mandible 3.10; pectorals equal to 

 head posterioi- to nostril; ventrals slightly longer than pectorals; depth 

 of caudal peduncle 2.10. 



Body oblong, compressed, its greatest depth at origin of ventrals, this 

 depth being considerably greater than at origin of anal. I3opth of caudal 

 peduncle greater than its length. 



Anterioi' profile from origin of dorsal to tip of snout, is strongly 

 rounded with a very slight constriction on nuchal region. Lower profile 

 not quite so strongly rounded as upper, jaws when closed are equal.- 

 Interorhital space evenly convex. Greatest width of head 1.50 in its 

 greatest depth. Snout rounded, its median M'idth being a third less than 

 its depth, its width considerable greatei' than it?; length, numerous small 

 pores on top of snout and on orbital ring. Preoperele strongly denticu- 

 late, nai'row but l)ecoming abritptly wide under anterior margin of orbit, 

 this wide portion ending posteriorly below in one oi' more strong sj)ines. 

 its anterior margin with a shallow notch ; width of preorbital, at angle of 

 mouth, 2 in eye, width below middle of eye, 1.50 in pupil. Maxillary 

 scarcely extending to the antericu' margin of orbit ; mandible ending 

 under anterior margin of orbit. Teeth in a single row in jaws. They 

 are rather strong and incisor-like, 18 on each side of upper jaw; no 

 teeth on vomer or palatine, (rill openings wide, carried forward to 

 below anterior margin of eye. Gill rakers moderately strong, toothed 

 on their innei- side, about 12 on lower limb. 



Body and head scaled, no scales on orbital ring. .Ml fins except 

 s'entrals more or less scaled; strong scaly sheaths at base of dorsal and 

 anal. The scales are smooth with finely ctenoid margins, those on 

 median portion of sides largest. Three I'ows of scales on opercle with a 

 i'ew additional small scales on lower margin. Eight scales between 

 dorsal and head, about 14 series on top of head. 



Origin of dorsal fin midway between tip of snout and base of twelfth 

 dorsal spine, the median spines of the fin are longest, the first spine is 

 1.25 in eye, the eighth is 2 in head, the thirteenth is 2.10 in head. The 

 soft dorsal is pointed, its longest ray 1.50 in head. Anal similar to soft 

 dorsal, the second spine is 2 in head, the longest ray equal to length of 

 head posterior of the nostril. Origin of first anal spine is under the 



