NO. 1792. JAPANESE LUTIANID^— JORDAN AND THOMPSON. 447 



Perca polyzonias (Forster), BLOcnand Schneider, Syst. Ichth., 1801, p. 316 (South 



Seas). 

 Diacope octolineata Ruppell, Reise Nord. Afrika, Atlas, 1826, p. 75 (Red Sea). — ■ 



CuviEE and Valenciennes, Hist. Nat. Poiss., vol. 2, 1828, p. 418 (Red Sea, 



etc.) in part. — Temminck and Schlegel, Fauna Japonica., 1843, p. 12, pi. 



6, fig. 2 (Nagasaki) and of various authors. 

 Genyoroge octovittata Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, p. 180 (lie de 



France) . 

 Mesoprion etaape Lesson, Voyage Coquille, 1830, p. 229 (Matavia, Beula; from 



Tahiti to Borabora). 

 Mesoprion pomacanthus Bleeker, Nat. Tyd. Ned. Ind., vol. 6, 1855, p. 407 (Am- 



boina). 

 Evoplites pomacanthus Gill, Proc. Acad. Nat. Sci. Phila., 1862, p. 234, name only. 



Habitat. — East Indies and neighboring seas, north to Nagasaki, and 

 Kagoshima in southern Japan. 



Description. — Of a specimen 180 mm. in total length, from Fuga 

 Island, Philippine Archipelago. 



Head 2§ in length to base of caudal, 3| in total; depth equal to 

 head; maxillary 2^ in head; longitudinal diameter of eye 4 ; width of 

 preorbitals 6; snout 3; D. X, 15; A. Ill, 8; scales above lateral line 

 in longitudinal series (counting transverse rows) 78; below 66; 

 between lateral line and dorsal 9 ; between lateral line and anal 20. 



Dorsal and ventral profiles evenly arched, save for the straight 

 dorsal profile of head. Upper jaw slightly longer, the lower included; 

 maxillary ending below anterior half of eye; teeth in outer rows of 

 both jaws conical, with two canines of larger size placed anteriorly 

 in the upper, remainder small; in lower jaw those of outer row largest 

 posteriorly, but much smaller than canines of upper. Inner bands 

 in both jaws of minute, bristle-like teeth, absent posteriorly in the 

 lower. Teeth on vomer in a /^x -shaped band ; on palatines in narrow 

 bands; teeth absent on tongue; preopercle with a prominent angular 

 notch on its posterior margin, which is finely toothed above and 

 coarsely below and on the rounded angle. Interopercle with large, 

 bluntly-spinous knob, fitting into preopercular notch. Opercle end- 

 ing in two flat points. 



Fourth dorsal spine highest, 2| in head, remainder diminishing 

 gradually in length, the last shorter than penultimate ; second anal 

 spine much longer than third, 2^- in head, the third 3. Soft dorsal 

 height one-half its length. Pectorals long, reaching a trifle beyond 

 anus, 1| in head. Ventrals short,* not reaching anus, 1| in head. 

 Caudal slightly emarginate. 



Scales ctenoid, present on basal half of soft dorsal and anal, and 

 on outer rays of caudal nearly to their tips. Occiput behind center 

 of eyes densly scaled, as is temporal region and cheeks behind center 

 of eyes ; interopercle, subopercle, and lower limb of preopercle scaled ; 

 scales on opercle 10 or 1 1 rows, on preopercle 7. Rows on body above 

 lateral line oblique, those below horizontal. 



