Mycteroperca 



a. Nostrils subequal, well separated 



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



c. Anal fin 111, 9 to 11, high and falcate houlengeri, 391 



cc. Anal hn 111, 11 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 ;c + 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. . ..apiia, }()2 



ff. Gill-rakers rather slender, about x+ 10; caudal subtruncate. 



h. Scales not very small, about 1 10. 



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



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



hh. Scales smaller, about 120 to 140 jordani, }q2 



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

 larged; gill-rakers more numerous, x-l-12 to 14. 



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



lukrolepis, jc)2 



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



iuterstitialis, 393 



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



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

 margin concave xenarcha, 393 



bb. Gill-rakers close-set, very long and slender, 25 to 3s below the 

 angle rubra, 39 3 



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 pardaiis, 393 



hk. 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. 



olfax, ^qj 



mm. Colour, chiefly red ruberrima, ^93 



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

 highest. 



;/. Margin of anal fm posteriorly concave, its middle rays much exserted. 



0. 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 -| length of head. 



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

 ouration obscure \ falcata, 39 ^ 



qq. Upper canines nearly vertical; colouration brighter .. ./)Zuv/jj:, 394 



00. Gill-rakers few, 8 below angle vcnadonim, 394 



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

 rounded or slightly angular. 



390 



