304. G. H. HORN, M. D. 



punctulate. Body beneath black punctulate with coarser and finer punctula- 

 tions intermixed, sparsely cinereo-pubesceut. Legs red. Length .26 — .30 inch ; 

 6.5 — 7.5 mm. 



Resembles hjjperhoreus. which is found in tlie extreme north of both 

 hemispheres, but differs by its black color, greater convexity and 

 smoother thorax with the median line more distinctly impressed, and 

 differs from all our species by the slender and strongly divergent hind 

 angles. 



The specimens were kindly presented by Mr. F. G. Sanborn, of 

 Boston, who obtained them from Mount Washington, New Hamp- 

 shire. 



C. aestivus, n. sp. — Brownish black, feebly shining, and with a very slight 

 tinge of bronze, and sparsely clothed with short yellowish pubescence. Head 

 very feebly convex, sparsely punctured, sub-opaque, frontal margin with nar- 

 row testaceous band. Antennae brownish black, three basal joints testaceous. 

 Thorax slightly broader than long, very convex, sides strongly rounded, nar- 

 rowed at base and apex, hind angles acute feebly divergent, with long carina, 

 and of a yellow color; surface sparsely punctulate. Scutellum oval margined 

 with testaceous. Elytra as broad at base as thorax, moderately convex, feebly 

 narrowed toward apex, color slightly paler than thorax and with oblique hu- 

 meral testaceous stripe extending one-third the length of elytra, apex obscurely 

 brownish testaceous; surface feebly striate, intervals flat and finely punctulate. 

 Body beneath brown-black, last segment of abdomen, legs including the coxte, 

 and parts of mouth yellowish testaceous. Epipleurse brownish testaceous. 

 Length .18— .22 inch ; 4.5—5.5 mm. 



Allied to quadripustulatiis^ but larger and with distinct aeneous 

 tinge. The thorax is broadest in front of middle and more decidedly 

 punctulate and the carina of the hind angles one-third and nearly one 

 half the length of the thorax. The elytra are gradually narrowed 

 from base to apex and not elongate oval as in the European species. 



For the specimens in my cabinet I am indebted to S. V. Summers, 

 of St. Louis, Missouri, in which region he collected them. 



C. perplexua, n. sp. pi. IV, fig. 4. — Black, with aeneous tinge, shining ; form 

 slender. Head sparsely punctured front with two faint linear impressions con- 

 verging to the vertex. Antennfe piceous three basal joints yellowish testa- 

 ceous. Thorax convex, very sparsely punctulate, shining, longer than wide 

 broadest slightly in front of middle, and more narrowed at base than apex, 

 hind angles acute, slender, moderately divergent, yellowish in color and with 

 long carina; sides moderately arcuate. Elytra oblong, piceous black, shining 

 with ajneous tinge, humeri with rufous spot; surface striate, strite punctured, 

 intervals moderately convex biseriately jjunctulate and sparsely hairy. Body 

 beneath black, closely punctulate. Legs pale yellowish testaceous. Length 

 .12 inch; 3 mm. 



This species was referred by Dr. Leconte (Proc. Acad. 1866, p. 389) 

 to the bimaculate variety of quadrlpustulatus^ of Europe. There be- 



