ClCINDELID/E AND CARABID/E 133 



Pterostichus osculans Csy. Cont. Descr. and Syst. Col., N. A., 

 Phila, 1884, Pt. I, p. 2; diligendus Lee. nee Chd. Proc. Acad. Phila., 

 1873, p. 305; apalachins Horn Tr. Am. Ent. Soc., 1892, p. 41 (typo- 

 graphic error for appalachius). 



While referring to typographic error, it should be stated that 

 LeConte inadvertently misspelled the name of his Pterostichus 

 corrusculus (1. c., 1873, p. 310), which should of course be corusculus. 

 Mr. Frost recently sent me a specimen of this remarkably small 

 Pterostichus, taken near Framingham, Mass., and some time before 

 I had received from New Haven an example of a still more minute 

 but otherwise somewhat similar species, though with shorter elytra 

 and larger head, said to have been found in a box of nursery stock 

 from England. 



Stygicus group. 



Of this conspicuous group of polished black, deeply striate, 

 Atlantic species, my collection still lacks superciliosus Say and 

 agonus Horn, but there are three species at hand that do not fit 

 any of the descriptions thus far published; these are the following: 



Pterostichus probus n. sp. Oblong, elongate, convex, deep black and 

 polished; head four-sevenths as wide as the prothorax, the impressions 

 very large, broadly concave; labrum transverse, rectilinearly truncate; 

 antennae rather long, the tenth joint on the flat side nearly two and one- 

 half times as long as wide; prothorax large, a fifth wider than long, some- 

 what obtrapezoidal, the sides rounded anteriorly, becoming oblique and 

 straight in about basal half, the angles obtuse and rounded; base broadly 

 sinuate medially, four-fifths the maximum width; surface convex, deeply 

 concave and strongly reflexed along the side margins, the impressions 

 broadly confluent, the concavity punctate, the lateral carina parallel 

 with the sides and strong; median stria strong and entire; elytra nearly 

 two-thirds longer than wide, distinctly wider behind the middle than at 

 base and fully two-fifths wider than the prothorax, rapidly rounding 

 behind to the subangular apex, the sides feebly converging and almost 

 straight from about the middle to the slight humeral rounding, the 

 denticle wholly obsolete; striae very deep, finely punctulate along the 

 bottom, the scutellar long and deep, the intervals all very convex and 

 polished; tarsi long and notably slender, piceo-rufous. Length (9) 

 18.0 mm.; width 6.4 mm. North Carolina (Asheville). 



Allied to cor acinus Newm., but differing in the more oblong, less 

 convex, more rectilinearly basally narrowed elytra, longer and much 

 more slender tarsi and in the form of the mentum tooth, this being 

 moderately emarginate in coracinus, but sinuate half way to the base 



