MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 505 



{leucocnemh from the Orient does not belong here). It is distin- 

 guished from other American genera by the obsolete gular sutures. 

 Although slight impressions are visible on the surface, microscope 

 preparations show the sutures to be entirely absent. 



I have examined 35 specimens from the West Indies and assign 

 them to 5 species, 3 of which are apparently new. 



KEY TO WEST INDIAN SPECIES OF OLIGOLINUS 



1. Head strongly margined at sides beneatli 2 



Head not margined at sides beneatli 4 



2. Pronotum with at least two pairs of discal punctures 3 



Pronotum with one pair of discal punctures 3. filarius 



3. Head and pronotum black (or at least darker than elytra). 



4. testaceipennis 

 Head and pronotum rufous, elytra at least in part black or piceous. 



5. variabilis 



4. Pronotum with at least two pairs of discal punctures 2. darlingtoni 



Pronotum with one pair of discal punctures 1. hubbardi 



1. OLIGOLINUS HUBBARDI, new species 



Description. — Rufous, more or less picescent in parts, elytra piceo- 

 testaceous, abdomen more or less testaceous at base. Head one-fourth 

 longer than wide, becoming slightly wider behind eyes, slightly pro- 

 longed at middle posteriorly; antennal grooves entirely obsolete, 

 ocular grooves rather well developed; underside not margined by 

 ridge or depression ; with a very few large punctures at sides but ver- 

 tex impunctate; with indistinct longitudinal strigulae. Pronotum 

 nearly one-third longer than wide, widest in anterior third, rapidly 

 narrowed to middle and thence straight to rounded basal angles; with 

 a single pair of discal punctures and a very few lateral ones ; with in- 

 distinct strigulae not always longitudinal. Elytra with surface very 

 uneven but not distinctly punctate, except for two or three large setig- 

 erous punctures; without distinct ground sculpture. Abdomen im- 

 punctate except for a few large setigerous punctures; without distinct 

 ground sculpture. Length, 5 nam. 



Type locality. — Montserrat. 



Types. — Holotype and one paratype, U.S.N.M. No. 52437, collected 

 by H. G. Hubbard on March 22, 1894. 



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



Montserrat: (Hubbard, in U.S.N.M.). 



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



Remarks. — This species is distinguished by the complete absence of 

 margining on the underside of the head and the single pair of discal 

 pronotal punctures. 



I have no record of its habits. 



449008—42 33 



