234 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Serranus rogaa Valenciennes, Hist. Nat. Poiss., vol. 2, 1828, p. 349 (on 



Forskal). — Ruppell, Atlas Reise ndrdl. Afrika, Fische, 1828, p. 105, pi. 



26, fig. 1 (Red Sea).— Gunther, Cat. Fish. Brit. Mus., vol, 1, 1859, p. 



110 (Red Sea). — Playfair, Fishes of Zanzibar, 1866, p. 2 (Zanzibar). — 



Klunzinger, Verh. zool. bot. Ges. Wien, vol. 20, 1870, p. 679 (Koseir, 



Red Sea); Fische Roth. Meer., 1884, p. 3. — Boulenger, Proc. Zool. 



Soc. London, 1889, p. 238 (Muscat). — Steindachner, Denkschr. Akad. 



Wiss. Wien, vol. 71, pt. 1, 1907, p. 124 (Bal Haf, Socotra). 

 Serranus rogan Martens, Verh. zool. bot. Ges. Wien, vol. 16, 1866, p. 378 



(Red Sea). 

 Serranus (Epinephelus) rogaa Zugmayer, Abh. Bayer. Akad. Wiss. Math.- 



Phys. KL, vol. 26, pt. 6, 1913, p. 9 (Oman). 

 Epinephelus rogaa Boulenger, Cat. Fish. Brit. Mus., vol. 1, 1895, p. 185 



(Red Sea, Zanzibar, Muscat, Ceylon). 

 Cephalopholis rogaa Fowler, Proc. Acad. Nat. Sci. Philadelphia, 1907, p. 252 



(Padang material). 

 Perca lunaria Forskal, Descript. Animal., 1775, pp. xi, 39. Djedda and 



Lohaja, Red Sea. — Bonnaterre, Tabl. Ichth., 1788, p. 131 (Red Sea). — 



Gmelin, Syst. Nat. Linn., vol. 1, 17S9, p. 1316 (Arabia). — Walbaum, 



Artedi Pise, vol. 3, 1792, p. 344 (on Forskal). 

 Bodianus rogaa var. lunaria Schneider, Syst. Ichth. Bloch, 1801, p. 335 



(Red Sea). 

 Serranus lunaria Ruppell, Neue Wirbelth., Fische, 1835, p. 90 (note). 



Depth 2M to 2}4; head 2% to 2%, width 2% to 2%. Snout 3J4 

 to V/2 in head from snout tip; eye 63^ to 7%, 2 to 2% in snout,, 

 slightly greater than interorbital to 1% with age; maxillary not quite 

 reaching opposite hind eye edge in young to little beyond with age, 

 expansion little greater than eye or 5% to 6V§ in head, length V/g to 

 2 in head from snout tip; teeth conic, sharp, inner depressible and 

 outer row slightly enlarged; 3 rows of mandibular teeth narrowing to 

 single inner large depressible row posteriorly; pair of front canines in 

 each jaw; minute teeth on vomer and palatines; interorbital 6% to 

 6%, convex, steep; minute and irregular serrae on preopercle edge, 

 all obsolete with age; upper opercle spine well separated and little 

 advanced from others. Gill rakers 11 + 15, of which 5 to 9 rudiments 

 above and below, much longer than gill filaments or % of eye. 



Scales 96 to 100 + 18 to 20 in lateral line; pores 50 to 53 + 2 to 5; 

 22 or 23 above, 29 to 44 below, 80 predorsal scales; 27 to 29 rows 

 across cheek to preopercle angle; scales on head smooth, small on 

 maxillary, covering its upper half; fins with greater portion basally 

 covered with small scales; with age greater part of head above and 

 back with many small auxiliary scales. Scales with 6 or 7 basal 

 radiating striae; 47 to 57 apical denticles with 5 to 8 transverse series;, 

 circuli rather fine. 



D. IX, 17, i or 18, i, third spine 2% to 3% in total head length, 

 eleventh ray \ 2 /z to 2^5 A. Ill, 9, second spine Z% to 4, fifth ray 

 \% to 2; caudal 1^ to \%, broadly truncate; least depth of caudal 

 peduncle 2}i to 2%; pectoral 1% to \%; ventral lj^ to \%. 



In alcohol uniform blackish brown, fins blackish. Young with hind 

 edges of soft dorsal, soft anal and caudal whitish, latter broadly so> 



