408 CASEY 



i6 — Female with long and generally pronounced parallel and moder- 

 ately separated dorsal pronotal ridges, evanescent only near the 

 base 17 



Female with short, more or less feeble ridges, evanescent near the 

 middle 1 8 



17 — Body small in size, moderately slender and convex, shining, d.ep 

 black, without metallic lustre except a feeble greenish tinge on the 

 elytra ; head rather coarsely, confluently punctate toward the eyes, 

 less closely along the middle, which is unusually convex ; pro- 

 thorax ( 9 ) small, transverse, rather more than one-half wider 

 than long, trapezoidal, the sides nearly straight, the apical angles 

 very acute and not blunt but not prolonged, the basal acute but 

 not everted, the ridges strong, straight, extending almost to the 

 base, the surface deeply concave in the middle anteriorly, finely, 

 rather sparsely punctate, less finely and very closely laterally, the 

 thickened margin subeven in width ; scutellum parabolic ; elytra 

 barely one-half longer than wide, obtuse at tip, the sides arcuate, 

 abruptly and strongly rounded at base, at the middle almost two- 

 thirds wider than the prothorax, the surface with feeble and 

 bi'oadly impressed lines throughout, finely but stronglv, rather 

 closely punctured, more coarsely, shallowlv, densely and sca- 

 brously toward the sides ; abdomen minutely, unusually sparsely 

 and very inconspicuously punctulate medially; male unknown. 

 Length 8.5 mm. ; width 4.0 mm. Kansas insitus n. sp. 



Body much larger, rather dull in lustre as a rule, grayish-black, some- 

 times with a feeble bronze lustre, the pubescence short but rather 

 abundant and distinct, cinereous ; head densely and moderately 

 coarsely punctate in both sexes, the epistomal lobe very broadly 

 ogival ; prothorax {(^) more than one-half wider than long, 

 moderately narrowed at apex, the sides rather strongly, subevenly 

 arcuate, sinuate behind the apical angles, which are moderately 

 acute and prominent, everted, the basal angles acute and more or 

 less everted, the surface almost evenly convex, the apical lobe 

 very feeble, the punctures fine but strong, moderately sparse, with 

 the smooth line imperfect, becoming not very coarse but close near 

 lateral fifth and finer and very dense near the edges ; prothorax 

 ( 9 ) nearly similar in form and size, the sides very feebly arcuate, 

 the basal angles acute but not everted, the apical acute but not 

 evidentl}- everted, the thickened margin broader basally, the ridges 

 strong, moderately separated, the inclosed impression extending 

 ])ehind the middle, the punctures fine and sparse, only a little less 

 fine but rather close-set laterally ; elytra oblong, obtuse behind, 

 much wider than the prothorax and more than three times as long, 

 the sides stronglv rounding at base, the surface with broadly and 

 feebly impressed lines as a rule, finely and rather closely punctate, 

 not very coarsely, closely and asperulately so laterally. Length 

 10.0-12.0 mm.; width 4.7-5.7 mm. Colorado (Colorado 

 Springs), Kansas, New Mexico (Magdalena Mts., Sta. F^ Canyon 

 and Albuquerque) and Texas (Alpine and El Paso). 



canaliculatus Say 



