PTEROSTICHIN.E 359 



scure rufous throughout; prothorax scarcely more than a fourth wider 

 than long; base broadly sinuate except laterally, equal in width to 

 the still more sinuate apex, the nearly flat border of the latter de- 

 fined by an entire and deeply incised line; sides very evenly arcuate 

 from apex to base, broadly reflexed basally, the basal angles obtuse 

 and blunt; stria not entire, very deep at its posterior end; impres- 

 sions just traceable, the posterior having a deep rounded depression 

 near each inner fovea; surface with sparse transverse ruguliform 

 lines; foveae confluent; carina distinct, distant from the reflexed 

 sides; scutellum small, transversely triangular, smooth; elytra three- 

 fourths longer than wide, barely a fourth wider than the prothorax; 

 ,sides broadly arcuate, the sinus very feeble; striae finely, deeply 

 incised, with deep and conspicuous punctures, slightly crenulating 

 the just visibly convex intervals; scutellar stria wanting, the mar- 

 ginal nearer the eighth than the margin. Length (cf 9 ) 14.0-16.5 

 mm.; width 4.8-5.7 mm. Missouri (St. Louis) and Iowa (Keokuk). 



rubripes n. sp. 



Legs black to piceous 3 



3 Sides basally only narrowly reflexed and broadly, just visibly sinuate 



to straight, though not at all constricted 4 



Sides of the prothorax rather broadly reflexed and arcuate, not straight 



or feebly sinuate basally, the conformation as in rubripes 5 



4 Body slightly ventricose, moderately convex, deep black, the elytra 

 opaque, the anterior parts slightly shining; head more polished, nearly 

 three-fifths as wide as the prothorax, the eyes rather prominent; man- 

 dibles striate only internally behind the middle ; antennae slender, fer- 

 ruginous distaily; prothorax not quite a third wider than long; base 

 and apex equal, the apex broadly, the base medially, sinuate; anterior 

 margination defined by an entire and deeply incised line; sides a little 

 straighter basally; transverse impressions feeble, small, the depres- 

 sion just inside the inner foveae deep; foveae widely separated; carina 

 rather obtuse; elytra one-half to two-thirds longer than wide and 

 a fifth to two-fifths wider than the prothorax, the subapical sinus 

 barely traceable; strial punctures and intervals nearly as in the pre- 

 ceding, the marginal stria very close to the eighth and the scutellar 

 obsolete. Length (3d 71 , 69) 14.5-17.5 mm.; width 5.2-6.6 mm. 

 Indiana. Levette collection; also received from Mr. Blatchley 



under the name orbatus sigillatus Say 



A Similar to sigillatus but flatter and much more parallel, the pro- 

 thorax relatively larger and subequal in width to the elytra, with 

 the incised line parallel to the apical margin very much finer and 

 feebler; surface more broadly impressed at the foveae, which are 

 therefore individually less deep, the depression near the inner 

 feeble and diffuse; oblique sides basally feebly arcuate, not be- 

 coming so straight as in sigillatus; other characters nearly similar. 

 Length (d 71 ) 15.7 mm.; width 5.35 mm. Indiana. 



parallelus n. subsp. 



Bod y still less ventricose and more parallel, moderately stout, the anterior 

 parts relatively a little larger than in sigillatus, the surface less 

 opaque, distinctly shining in the male; color deep black through- 



