Mycteroperca 



a. Nostrils subequal, well separated 



b. Gill-rakers comparatively few and short, 8 to 20 below the angle. 



c. Anal fin III, 9 to 1 1, high and falcate bonlengeri, 391 



cc. Anal fin III, n or 12, long. 



d. Anal fin not angulated, its outline more or less evenly rounded. 



e. Angle of preopercle not salient, its teeth scarcely enlarged; gill- 



rakers x + 8 to 10. 



/. Gill-rakers very few and short, x + 8 developed; caudal lunate. 



g. General colour gray, with red and black markings. . .venenosa, 391 



gg. General colour scarlet, with red and black markings. .. .apna, 392 



ff. Gill-rakers rather slender, about #+io; caudal subtruncate. 



h, Scales not very small, about 1 10. 



/. Dark blotches on body rather large, often quadrate bonaci, 392 



//. Dark spots on body very small, close-set xanthosticta, 392 



hh. Scales smaller, about 120 to 140 Jordani, 392 



ee. Angle of preopercle more or less salient, its teeth somewhat en- 

 larged; gill-rakers more numerous, x-\-\2 to 14. 



j. Scales very small, about 140; caudal distinctly lunate. 



microlepis, 392 



jj. Scales somewhat larger, about 120; caudal little concave. 



iuterstitialis, 393 



jjj. Scales still larger, about 110; caudal deeply lunate, dimidiata, 393 



dd. Anal fin angulated, its middle rays much exserted, its posterior 

 margin concave xenarcha, 393 



bb. Gill-rakers close-set, very long and slender, 25 to 35 below the 

 angle rubra, 393 



aa. Nostrils very close together, the posterior decidedly larger than 

 the anterior. 



k. Gill-rakers very numerous, long and slender, about 24 below the 

 angle pardalis, 393 



kk. Gill-rakers fewer and moderate, 6 to 18 below the angle. 



/. Second dorsal spine highest, its length more than | that of head. 



m. Colour, brown, with grayish reticulations and brown spots. 



o/fax, 393 



mm. Colour, chiefly red rnberrima, 393 



//. Second dorsal spine low, shorter than third, the third and fourth 

 highest. 



n. Margin of anal fin posteriorly concave, its middle rays much exserted. 



o. Gill-rakers rather numerous, 17 to 20 below angle of arch. 



p. Outer rays of caudal scarcely produced, not f length of head. 



rosacea, 393 



pp. Outer rays of caudal much produced, more than f length of head. 



q. Upper canines directed strongly forward, the lower backward; col- 

 ouration obscure falcata, 393 



qq. Upper canines nearly vertical; colouration brighter . . .phenax, 394 



oo. Gill-rakers few, 8 below angle venadorum, 394 



nn. Margin of anal fin concave posteriorly, the outline of the fin 

 rounded or slightly angular. 



390 



