MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 313 



4. Gular sutures most approximate along middle 7. odium 



Gular sutures diverging from before middle 5 



5. Elytra with two or three discal series of punctures 6 



Elytra with four or five discal series of punctures 3. rubidum 



6. Seventh sternite of male with angles of emargination acutely toothed ; outer 



apical third of elytra paler 6. darlingtoni 



Seventh sternite of male not toothed 7 



7. Piceous or rufopiceous, elytral apex indefinitely paler 5. m.argipallens 



Rufous, elytra picesceut with apical half or two-fifths testaceous. 



4. nitidum 



8. Pronotum with two regular series of punctures 9 



Pronotum without distinct single series 10. pluviosum 



9. Dorsal series with 6 punctures 9. borinquense 



Dorsal series with about 12 punctures 8. reductum 



1. LOBRATHIUM DISCOLOR (Erichson) 



Lathrolium discolor Ekichson, 1840, p. 598. — Bkbnhauek and Schubert, 1912, 

 p. 258. 



Description. — Nigropiceoiis to rufous (immature), apical two- 

 thirds of elytra generally rufopiceous (always more rufous than 

 remainder). Head with sparse moderate punctures separated by one 

 to three times their diameter; without ground sculpture; gular su- 

 tures moderately widely separated, parallel throughout. Pronotum 

 with sparse moderate punctures ; median smooth stripe irregular, not 

 bordered by a regular series of punctures ; lateral punctures not more 

 than partly in series; without ground sculpture. Elytra with mod- 

 erately coarse but rather shallow and indefinite punctures in irregular 

 series, one sutural, about four discal, and two posthumeral; without 

 distinct ground sculpture. Hind tarsius with first segment slightly 

 shorter than second. Male, seventh sternite with a longitudinal con- 

 cavity in apical two-thirds, impunctate except at sides, the edges 

 abrupt and elevated, the segment vaguely emarginate at center; 

 eighth sternite with an ogival emargination two and one-half times 

 as long as wide, the apex narrowly acute, the angles not rounded; 

 sixth and even fifth sternites sometimes with a trace of median im- 

 pression. Female, sternites not modified. Length, 7 to 8 mm. 



Type locality. — "America meridionalis ins. St. Thomae." 



Types. — Either in the Hope Museum, Oxford, or the Zoologische 

 Museum, Berlin. 



Records. — The following are the records known to me : 



Cuba: Soledad (Darlington, in M.C.Z. and U.S.N.M.), Aguadores, in Oriente 

 (Darlington, in M.C.Z. ). 



Hispaniola: Haiti, Iiltang Lachaux (Darlington, in M.C.Z.) ; Dominican Re- 

 public, Barahona (Darlington, in M.C.Z.), Sanchez (Darlington, in M.C.Z. 

 and U.S.N.M.), Puerto Plata (Darlington, in M.C.Z.). 



St. Thomas: (Erichson, 1840). 



[South America: (Bernhauor and Schubert, 1912, by error).] 

 449008 — 42 21 



