432 WILLIAM G. DIETZ, M.D. 



oval, moderately convex, a little wider at the base than the prothorax, humeri 

 oblique, somewhat prominent, broadly rounded on the sides, posterior callus ob- 

 solete, strige wide, well impressed, distinctly and rather remotely punctured, in- 

 terstices not much wider than the striae, slightly convex, a scutellar spot of white 

 scales; pygidium not coarsely punctured, anterior coxge very narrowly separated ; 

 femora feebly clavate, middle and posterior with a rather large tooth ; tibiae par- 

 allel, tarsi rather stout, third broadly bilobed and as long as the preceding joint, 

 fourth short, projecting less than the length of the third, claws armed with a 

 short, acute, basal tooth. Length 2.5 mm. ; 0:10 inch. 



%. Last ventral segment deeply impressed in its apical half; tibise not uu- 

 guiculate at the apex. 



Hab.— Ohio. 



A single male specimen in Mr. Ulke's coll. is the type of this in- 

 teresting addition to our fauna. The bright seueous lustre of the 

 elytra at once distinguishes this species. 



C bolteri n. sp. — Oblong oval, blackish, elytra dark steel-blue, above sparsely 

 clothed with short, fine pubescence, a scutellar spot of white scales, underside 

 finely and not closely punctured, scales grayish white, not dense. Beak curved, 

 slender, somewhat shining, striate and punctured from the base to the insertion 

 of the antennae, more finely punctured and shining toward the apex; antennae 

 slender, inserted just before ( ^ ) or at the middle ( 9 ), funiele 7-jointed, first and 

 second joints elongate, joints 3-4 subequal, outer joints short, club elliptical 

 Head densely punctured, clothed with coar.se pubescence; prothorax one-half 

 wider than long, one-third wider at the base than at the apex, narrowed from 

 base to tip, sides feebly rounded, broadly constricted behind the apical margin, 

 the constriction scarcely evident on the sides, dorsal channel less distinct at the 

 middle, ocular lobes prominent, lateral tubercles small, acute, disc not very closely 

 punctured, punctures of moderate size; scutel small, sc^ly. Elytra one-fourth 

 wider at the base than the prothorax, humeri oblique, gradually narrowed from 

 the humeral prominence, strive fine, superficial, punctures small, interstices 

 slightly convex, rugose, shining; femora feebly clavate, all armed with an acute 

 tooth, smaller on the anterior pair, tibiae slender, parallel, widened at the tip, 

 tarsi rather slender, third joint bilobed, first and second joints short, subequal, 

 fourth longer than the first joint, claws simple. Length 2.5 mm. : 0.10 inch. 



% . Last ventral segmeut transversely impressed ; middle and posterior tibia' 

 unguiculate at the apex. 



Hab.— IS. Illinois. 



A % and $ specimen kindly given to me by Mr. A. Bolter, to 

 whom it gives me pleasure to dedicate this species. The specimen.^ 

 had the label " C. erysimi F," attached, and this species certainly 

 bears a very close resemblance to the European, from which, how- 

 ever, it differs by its larger size, the toothed femora and much more 

 slender tarsi. I have specimens of C. eri/f<iiiil F. from Fiance, 

 Belgium, Greece and Karpathes Mountains, widely removed locali- 

 ties, w'hich show no difference whatever. In this species the under- 

 side of the body and the leys have a decided leneous lustre. 



