MONOGRAPH OF WEST INDIAN STAPHYLINIDAE o3 



Hispaniola: Dominican llF:prBLic, Santiago (U.S.N.M.). 



Puerto Rico: (Briclison, 1840; Fauvel, 1866; Leng and Mutchler, 1914; Wolcott, 



192-1, 193G). 

 Guadeloupe: (Fleutiaux and Sall^, 1889, as lacrymale; Leng and Mutchler, 



191-1, as lachnjDiale) ; Gourboyre (A.M.N. II.). 

 Grenada: (Blackwflder stations 132, 137, 153A). 

 Trinidad: Manzanilla (Blackwelder station 103A). 



Specimens examined. — I have examined 2 specimens in the United 

 States National jMuseum, 5 in the American Museum of Natural 

 History, 1 in the Museum of Comparative Zoology, 6 collected by 

 Chapin and Blackwelder in Jamaica, and 300 collected by me in 

 1935-37. 



Remarks. — In the Bernhauer and Schubert catalog pedicularim 

 is placed in the genus Phloeonomiis and lacrymale in the true Omal- 

 ium. I am unable to separate them in the material at hand and find 

 no records of either species having been taken since the original 

 description. Whether the species is found also in South America 

 is not known to me, but it seems distinct from the two described 

 species from that region, as Avell as from the Central American ones. 



I have collected this species in rotting cocoa pods, under ferment- 

 ing chips on a fresh stump, flying at dusk, and in a mixed lot from 

 fungus and rotten grapefruit. 



IV. Genus OMALIUM Gravenhorst 



Omalium Gr^vn'enhorst, 1802, p. 111. 



Ochthcxenus Motschulsky, 1860a, p. 546. 



Eomalium Gemmxnger and Hakold, 18G8, p. 665 (emendation). 



Omalium Wolcott, 1924, p. 77 (misspelling). 



Subgenus Stcnomaliian Bekxhauf.r, 1939, p. 194. 



Genotypes. — Staphylinus rlvularis PaykuU = Oinaliwni rivulare 

 (PaykuU) (indicated by Dumeril, 1806; designated by Latreille, 

 1810). (The designation of depressum by Samouelle, 1819, and of 

 planum. PaykuU by des Gozis, 1886, therefore cannot stand.) Of 

 Ochthexenus^ O. clavicornis Motschulsky (monobasic) ; of Steno- 

 7nalium, Omalium {Stenomalium) rwfloentre Bernhauer (designated 

 here). 



Diagnosis. — Body depressed; lioad broadly triangular; wit1i two 

 ocelli posteriorly; gula wide, narrowed anteriorly; antennae moder- 

 ately long, five apical segments enlarged and densely pubescent; 

 labrum transverse, feebly emarginate; mandibles short; third seg- 

 ment of maxilhiry pal[)us enlarged, fourth nearly as long as first 

 three; pronotum transverse; anterior coxal cavities confluent, widely 

 open behind; anterior coxae transverse, not prominent, mesosternum 

 more or le.ss carinate; elytra extending beyond the metasternum 

 posteriorly; posterior coxae contiguous, transverse, scarcely expanded 



