MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 157 



drical, decreasing in thickness from the second to fourth; mentum 

 subtriangular ; gular sutures united throughout ; prosternum not pro- 

 duced between coxae but forming a carina between and beneath them ; 

 anterior coxal cavities open behind; coxae short but exserted, without 

 transverse sulcus on the anterior face ; mesosternum and metasternum 

 not visibly united between middle coxae; mesosternum not carinate; 

 metasternum not punctate ; abdomen not margined ; first and second 

 sternites absent, third carinate at middle; apical segments scarcely 

 different in the two sexes; tarsi 5-segmented; tibiae not greatly ex- 

 panded and without spines except at tip. 



Remarks. — The history of this genus is outlined under Lispinus. 

 It is a very natural member of the Osoriinae and will give much less 

 trouble in that group than it has heretofore in the Piestinae. The 

 anterior coxae are not so prominent as in some members of the tribe 

 but are distinctly not of the globose form found in the Piestinae. 



I have examined 89 specimens of this genus, apparently belonging to 

 5 species, of which 3 are new. 



KEY TO WEST INDIAN SPECIES OF PARALISPINUS 



1. Head, pronotum, and elytra without ground sculpture 1. politus 



Head, pronotum, and elytra with distinct ground sculpture 2 



2. Elytra piceous, pronotum testaceous, head and abdomen fusco- 



testaceous 3. rulomus 



Unicolorous (rufous or testaceous) or nearly so 3 



3. Antennae very stout; impressions of head large and well 



marked 4. crepusculus 



Antennae not stout; impressions of head, moderate and indefinite 4 



4. Head, pronotum, and elytra with distinct punctures not ob- 



scured by ground sculpture 5. punctatus 



Head, pronotum, and elytra without punctures or with them 

 obscured by ground sculpture 2. exiguus 



1. PARALISPINUS POLITUS (Sharp) 

 Ancaem politus Sharp, 1887, p. 718.— Beenhauer and Schubert, 1910, p. 19. 



Description. — Kufotestaceous. Head moderately truncate in front; 

 with two vague impressions, not clearly delimited; very finely and 

 irregularly punctate; without ground sculpture; smooth, shining. 

 Pronotum about one-fifth wider than long, scarcely rounded at sides, 

 abruptly narrowed at posterior third; foveate at posterior angles; 

 midline very feebly canaliculate at basal third ; finely, irregularly, and 

 very sparsely punctate; smooth, shining, without ground sculpture. 

 Scutellum smooth, impunctate. Elytron with narrow sutural band 

 elevated but stria not impressed, without trace of discal stria; not 

 visibly punctate except for a moderate puncture at middle of disk; 

 with slight trace of ground sculpture only near apex. Length 214 to 

 2^/2 mm. 



