94 GEO. H. HORN, M. D. 



less punctured space exterally, the surface otherwise densely and coarsely punc- 

 tured ; elytra a little wider than the thorax, gradually narrowed fi-om the mid- 

 dle to the apex, the sides feebly serrate, the apices obtuse; disc subdepressed, 

 the first costa sharply elevated from the apex to the middle, extending to the 

 base in an irregular smooth space, the other cost* broadly interrupted forming 

 irregular, narrow, smooth spaces, an obliquely placed densely punctured space at 

 apical third between the first and third costfe, a smaller space near the middle 

 between the ends of the second costa, the basal fovea shallow, the surface mod- 

 erately coarsely and rather irregularly punctured ; body beneath very shining, 

 the punctures moderately coarse and not closely placed, ventral segments with- 

 out distinct lateral callosities ; prosteruum distinctly lobed in front, the lobe 

 short ; anterior femur with moderate tooth, serrulate on its distal edge ; last ven- 

 tral segment with serrulate margin, and slightly elevated submarginal ridge. 

 Length .40 -.50 inch; 10-12.5 mm. (Fig. 114.) 



Male. — Prosternum densely punctured and finely pubescent; anterior tibia 

 (119) arcuate, sinuate internally one-third from tip and from that dilated to the 

 apex ; middle tibia arcuate and gradually broader near the tip, the posterior very 

 slightly arcuate; last ventral segment (117) semi-circularly emarginate; last 

 dorsal coarsely punctured at apex and sides, the tip slightly emarginate. 



Female. —Prosternum coarsely not densely punctate, scarcely pubescent ; ante- 

 rior and middle tibise arcuate, the latter less so, not broader at tip, posterior tibia 

 straight; last ventral (118j longer than in the male, a very narrow but moder- 

 ately deep notched at apex ; last dorsal cribrately punctured, entire at apex. 



It is remarkable that a species from a locality from which this 

 comes should have remained so long unseparated, it having doubtless 

 been mixed with denUpes as a smoother and smaller variety. To the 

 acute observation of Mr. Fred. Blanchard we are indebted for its 

 recognition, and by him ray attention was first directed to the varia- 

 tion of the form of the prosternum in this genus. I take great 

 pleasure in making his name the specific appellation of this insect as 

 an evidence of my appreciation of his cai-eful study as well as of 

 his many kindnesses. 



Occurs in Massachusetts (Tyngsboro'), District of Columbia and 

 Lake Superior region. 



24. C quadriliiieata Lee. — Form rather broad, dein-essed, piceous, the 

 punctured spaces with dark bronze lustre, the elevated spaces alone shining, 

 beneath coppery bronze ; antenufp dark bronze J or greenish % slightly more 

 slender to tip, third joint a little longer than the next two; front very slightly 

 convex, coppery bronze in both sexes, more densely punctured in the male, the 

 occipital carina bifurcating on the front and with two small tubercles % or with 

 the sculpture coarser and more confused 9 ; clypeus (121) with an oval emar- 

 gination at middle, rounded each side ; thorax twice as wide as long, narrowed 

 at apex and base, widest slightly behind the middle, the sides at middle slightly 

 sinuate; disc moderately convex, a deep, median, densely punctured sulcus, on 

 each side a broad, smooth, slightly elevated space, a narrower, sinuous, elevated 

 space nearer the side, the surface otherwise coarsely and densely punctured; 



