462 PROCEEDINGS OF THE NATIONAL MUt^EUM. vol.37. 



the supraocular crest above the eye, the supraoccipital crest not 

 extending on the frontals; premaxillaries not extendmg backward to 

 the frontals; lower jaw strongly projecting; anal fin elongate, with 

 10 to 12 soft rays; caudal lunate or rounded; spines of fins slender, 

 none of them much elevated; scales small, mostly cycloid, those on 

 the lateral line simple ; pyloric caeca few ; gill-rakers various; nostrils 

 small, well separated, subec^ual. Otherwise essentially as in Epineijli- 

 elus, from which genus Trisotropis is well separated by the structure 

 of the skull, and superficially by the longer anal, larger mouth, and 

 more slender fin rays. Food fishes of the Tropics, mostly American. 

 We here separate Trisotropis as a genus distinct from Mycteroperca, 

 with which it agrees in general characters, but the posterior nostril in 

 Mycteroperca is much larger than the anterior, while in Trisotropis 

 the nostrils are essentially as in Epinephelus. The single Japanese 

 species belongs to the subgenus, Archoperca, defined by the deep, 



■''■'•^'- -~^. 



.t/ ii^At^^i'-'^^^ 



Fig. U. — Trisotkdpis dermopterus. 



compressed body and the relatively short and high anal fin. The 

 gill-rakers are few, as in the subgenus Trisotropis and in Epinephelus. 

 In Par epinephelus the gill-rakers are numerous and long. 



(jpeoi-, three; 'cobi;, equal; t/>6;:^( , keel, from the three parallel keels 

 on the top of the skull, a character which distinguishes Trisotropis 

 from Epinephelus . ) 



23. TRISOTROPIS DERMOPTERUS (Temminck and Schlegel). 



Serranus dermopterus Temminck and Schlegel, Faun. Japon., Pise, 1842, p. 10 

 (Nagasaki). — Gunther, Cat. Fishes, vol. 1, 1859, p. 154 (after Temminck 

 and Schlegel). — Steindachner and Doderlein, Denkschr. Akad. Wien, 

 vol. 59, 1892, p. 359, pi. 2, fig. 1. 



Epinephelus dermopterus Boulenger, Cat. Fishes, vol. 1, 1895, p. 269 (China). 



Head 3.3 in length; depth 2.65; eye 4 in head, 1.7 in maxillary; 

 dorsal XI, 21; anal III, 10; scales 27-140-66; pores 70; nose 4 in 



