MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 55 



2. OMALIUM DARLINGTONI, new species 



Description. — Piceous to riifopiceous, the margins rufous. Head 

 broadly raised along midline; margined above and behind the eyes; 

 feebly narrowed behind eyes to margin, then abruptly; ocelli promi- 

 nent at base, separated from punctate area by smooth diagonal promi- 

 nences; punctures moderately large but irregular, intervals sometimes 

 large and shining; in front with ground sculpture only. Pronotum 

 one-third wider than long; sides rounded in front, feebly angled at 

 middle, then straight to prominent posterior angles; strongly ex- 

 planate at sides but not upcurved ; feebly f oveate at middle of sides ; 

 disk with very feeble U-shaped impression; strongly and coarsely 

 punctate, with narrow and convex intervals; with traces of ground 

 sculpture on the intervals. Elytra two-sevenths wider than pronotum, 

 just longer than wide; feebly explanate at sides; densely and moder- 

 ately coarsely but irregularly punctate with traces of ground sculp- 

 ture on the intervals. Abdoinen above sparsely and shallowly but not 

 finely punctate; with feeble scaly ground sculpture. Length 21/0 to 

 3 mm. 



Type locality. — Jamaica, main range of the Blue Mountains, eleva- 

 tions between 5,000 and 7,388 feet. 



Types. — Holotype and 16 paratypes. Museum of Comparative Zool- 

 ogy; nine paratypes in the United States National Museum (No. 

 52481) ; collected by Dr. P. J. Darlington on August 17-19, 1934. 



Records. — The following is the only record known to me : 



Jamaica: Blue Mountains (Darlington, in M.C.Z. and U.S.N.M.). 



Specimens examined. — I have seen only the 26 types. 



ReiMLrks. — This series shows very little variation and is therefore 

 my principal reason for keeping separate the other three species. The 

 characters used arc not striking, yet they seem to be constant and to 

 be suflicient to separate the species if used with care. 



I have received no record of the habits of this species. 



S. OMAUUM CUBANUM, new species 



Description. — Rufopiceous, margins somewhat paler. Head 

 broadly raised along midline; margined above and behind the e5'^es; 

 scarcely narrowed behind eyes to margin ; then abruptly ; ocelli promi- 

 nent at base, separated from punctate area by smooth diagonal 

 prominences; punctures moderately large but very irregular, the inter- 

 vals often large and shining; in front with ground sculpture only. 

 Pronotum, nearly one-half wider than long; sides feebly arcuate in 

 front, distinctly angled at center, thence straight or slightly emarginate 

 to the distinct basal angles; broadly explanate at sides but not up- 

 curved; very feebly foveate at middle of sides; disk with a distinct 

 U-shaped impression; strongly and coarsely but irregularly punctate, 



