140 Trans. Acad. Sci. of St. Louis. 



joint unusually short, but little longer thaa the next two combined; 

 mesosternum moderately wide, arcuately narrowed at tip, the median 

 punctate part obtusely acuminate, barely reaching the apex, and, at a 

 short distance before the apex, not quite three times as wide as the 

 coxal grooves. 3Iale with the teeth of the sixth tergite large, broadly 

 triangular, about nine in number, the middle tooth wider and forming a 

 rounded lobe. Length 4.5 mm.; width 1.18 mm. New York (Catskill 



Mts.), — H. H. Smith medialis n.sp. 



S — Antennae somewhat as in the preceding group, short, very stout and 

 fusoid, narrowing toward the tip, distinctly shorter than the head and 

 prothorax combined, the joints compactly placed and very strongly 

 transverse. Body very stout, large, parallel, shining, deep black 

 throughout, the legs and antennae also biack, the latter not distinctly 

 paler at base, the tarsi piceous ; head much less than half as wide as 

 the prothorax, sparsely punctate, the eyes large ; prothorax two-thirds 

 wider than long, strongly rounded at base, the sides strongly converg- 

 ing anteriorly and less arcuate than usual, but with the basal angles 

 broadly arcuate and obliterated, the punctures minute and rather sparse; 

 elytra not twice as wide as long, the sides evidently longer than the 

 sides of the prothorax, the suture two-thirds as long as the median line 

 of the latter, the punctures close-set, strong and asperate, much larger 

 than those of the prothorax; abdomen at base as wide as the elytra, 

 only very slightly narrowed thence to the apex of the fifth segment, the 

 punctures coarse and moderately sparse; hind tarsi thicker toward 

 tip than in the preceding division, the tarsi shorter than the tibiae, very 

 slender, with the basal joint not quite as long as the next three com- 

 bined; raesosternal process very wide, the sides more converging than 

 Iq the lustrica group, the apex arcuately narrowed. Length 5.0-7,5 mm. ; 



width 1.6-2.3 mm. New York and Virginia to Iowa lata Grav. 



Antennae longer and more slender, the outer joints much less transversa, 

 gradually thicker to the tip, the eleventh joint being wider than any 



preceding 9 



9 — Punctured part of the mesosternal process broad, truncate at tip and 



extending fully to the spex of the process 10 



Punctured part of the mesosternal process finely acuminate at tip 11 



10 — Form moderately stout, subparallel, blackish-piceous throughout 

 anteriorly, the antennae dull rufous at base ; elytra dark rufous, broadly 

 blackish about the scutellum and at the sides, except, as usual, near the 

 humeri; abdomen black throughout, the legs dull rufous; head distinctly 

 less than half as wide as the prothorax, both finely, rather closely 

 punctate; antennae longer than the head aud prothorax together, rather 

 slender toward base, moderately thick distally, the eyes moderate; 

 prothorax two-thirds wider than long, moderately narrowed anteriorly, 

 the sides unusually arcuate and as strongly so as the base; elytra two- 

 thirds wider than long, finely, moderately densely and somewhat asper- 

 ately punctured, the suture scarcely two -thirds as long as the prothorax ; 

 abdomen formed as usual, the punctures normally sparse but not very 

 coarse, the impressions very minutely, sparsely punctate; sixth tergite 

 trapezoidal, the apex broadly sinuato-truncate; basal joint of the hind 

 tarsi as long as the last two combined, shorter than the succeeding 



