VI BULLETIN 18 2^ UNITED STATES NATIONAL MUSEUM 



Systematic treatment — Continued. Page 

 Subfamiily Staphylininae — Continued. 



Genus Diochus Erichson 455 



Genus Cephaloxynum Bernhauer 458 



Key to West Indian species of Cephaloxynum 459 



Genus Holisus Erichson 460 



Key to West Indian species of fjToiisws 461 



Genus Heterothops Stephens 464 



Key to West Indian species of Heterothops 464 



Genus Acylophorus Nordmann 466 



Key to West Indian species of Acylophorus 467 



Genus Alanygnathus Jacobson 471 



Key to West Indian species of Alanygnathus 471 



Key to West Indian genera of Xantholinini 473 



Genus Xaniholinus Dejean 473 



Key to West Indian species of Xaniholinus 475 



Genus Thyreocephalus Guerin 490 



Genus Plochionocerus Sharp 491 



Genus Leptacinus Erichson 493 



Key to West Indian species of Leptacinus 493 



Genus Lithocharodes Sharp 496 



Key to West Indian species of Lithocharodes 496 



Genus Microlinus Casey 502 



Genus Stenolinus Bierig 503 



Genus Oligolinus Casey 504 



Key to West Indian species of Oligolinus 505 



Subfamily Tachyporinae 509 



Key to West Indian genera of Tachyporinae 509 



Genus Leucoparyphus Kraatz 510 



Genus Coproporus Kraatz 512 



Key to West Indian species of Coproporus 512 



Genus Conosomus Motschulsky 524 



Genus Dryoporus Kraatz 526 



Key to West Indian species of Bryoporus 527 



Subfamily H ypocyphtinae 53 1 



Genus Anacyptus Horn 532 



Subfamily Aleocharinae 533 



Genus Deinopsis Matthews 534 



Genus Myllaena Erichson 534 



Genus Pronomaea Erichson 535 



Genus Oligota Mannerheim 535 



Genus Thyreoxenus Mann 538 



Genus Eburniola Mann 538 



Genus Thaxteria Fenyes 539 



Genus Perinthus Casey 539 



Genus Barychara Sharp 539 



Genus Gny petosoma Cameron 539 



Genus Alisalia Casey 540 



Genus Brachychara Sharp 540 



Genus Gyrophaena Mannerheim 540 



Genus Diestota Mulsant and Rey 544 



Genus Coenonica Kraatz 544 



Genus Placusa Erichson 545 



Genus Silusa Erichson 545 



