1918.] 



NATURAL SCIENCES OF PHILADELPHIA. 



51 



black ocellus on the back of the tail, which Jordan and Scale state is 

 apparently a distinctive character.^^ Bleeker gives six figures, though 

 none exactly agree with my material. ^^ 



(For Dr. Marmaduke Burrough, 17987-1844, who obtained fishes 

 at Manila, which found their way to the Academy collection.) 



Pomacentrus opisthostigma sp. nov. Fig. 20. 



Head 3|; depth 1|; D. XIV, 12, i; A. II, 15, i; P. ii, 15; V. I, 5; 

 tubes 15 in upper arch of lateral line and 10 pores in straight section 

 to caudal base; 4 scales above 1.1. to spinous dorsal origin, and 10 



Fig. 20. — Pomacentrus opislhostigma sp. nov. 



below in vertical series to spinous anal origin; 22 predorsal scales; 

 head width If in its length; head depth 1 ; snout 3|; eye 3|; maxiUary 

 3^; interorbital 2f; last dorsal spine 2 in head; second anal spine 

 If; sixth dorsal ray If; eighth anal ray If; pectoral 1; ventral spine 

 If; least depth of caudal peduncle 2|; caudal about 1?, 



Body well compressed, contour rather deeply ellipsoid with greatest 

 depth medianly, profiles largely alike except slightly humped pre- 



35 BuU. Bur. Fisher., XXV, 1905 (1906), p. 281. 

 3« Atlas Ich. Ind. Neerl., IX, 1877, PI. 7, figs. 1-6. 



