OSTOMID.E IO9 



and elongate; mandibles finely and sparsely punctate and dull, 

 except at the abruptly polished apex; eyes nearly flat, well developed, 

 arcuately truncate above, broadly sinuato-truncate behind; pro- 

 thorax not or but very slightly longer than wide, distinctly wider 

 than the head, the base broadly arcuate and but slightly narrower 

 than the apex, the basal angles slightly denticuliform; side margins 

 well developed throughout, the base coarsely beaded, the bead 

 minutely punctate; surface strongly and deeply punctate, the punc- 

 tures well separated throughout; scutellum very small, rounded, 

 tumid; elytra fully as wide as the prothorax and between two and 

 three times as long, perfectly parallel and with nearly rectilinear sides, 

 the apex circularly rounded; striae very regular, impressed and with 

 coarse rounded punctures, the intervals convex, each with a series 

 of widely separated minute points; under surface strongly and 

 closely punctured laterally, more sparsely and finely medially. 

 Length 8.3-10.7 mm.; width 2.0-2.6 mm. North Carolina (South- 

 ern Pines) to Indiana and northern New York. [Hypophlccusl 



niger Mels.j cylindrica Serv. 



Body smaller and more slender, never over 7 mm. in length; antennal 

 club shorter and relatively rather broader, at least in all the western 

 forms, where also the prothorax is always very distinctly elongate. . 2 



2 Atlantic coast species not known to the writer 3 



Pacific coast and Sonoran species 4 



3 Form entirely as in the preceding species, blackish, strongly tinged 

 with reddish-brown; head not longitudinally indented in the middle, 

 formed and punctured as in cylindrica; eyes, palpi and antennae 

 similar; outline of the prothorax also similar, but with the punctures 

 denser; scutellum and elytra formed and sculptured as in ryliiidrica; 

 under surface and legs entirely similar. Length 6 mm.; width I mm. 



Pennsylvania [Hypophlcsusl nigellus Mels] nigrella Mels. 



Form as in the two preceding species, castaneous; head as in nigrella and 

 similarly punctured, with an obsolete impressed line between the 

 eyes, which are as in the preceding; mandibles similar, piceous; 

 antennae and palpi rufous; prothorax in outline as in nigrella, the 

 punctuation as in cylindrica; elytra cylindric, slightly narrowed from 

 the base toward the apex, not as wide at base as the thoracic apex, 

 sculptured as in the two preceding; under surface and legs dark 

 rufo-piceous; form of the tibiae and tarsi as in nigrella. Length 

 4 mm.; width 0.67 mm. Pennsylvania [Ilypoplilccus? teres Mels.]. 



teres Mels. 



4 Body cylindric as usual, though rather stout in the female, the outline 

 nearly as in cylindrica. Polished black throughout, the legs obscure 

 rufous; antennae black, the apex and inner half of the club ferru- 

 ginous, the club broad, fully as long as the shaft, the joints of which 

 are short and transverse, the tenth joint twice as wide as long; head 

 but slightly narrower than the thoracic apex, very shining, strongly 

 but not closely punctate, the front convexly declivous but only just 

 visibly impressed anteriorly; eyes transverse, truncate above, sinu- 

 ato-truncate behind, only very feebly convex and very coarsely 

 faceted as usual; under surface, just behind the buccal opening, 



