16 MISIC. PUBLICATION 4 70, U. S. DEPT. OF AGRICULTURE 



Elytra distinctly wider than pronotum, twice as long as wide; sides nearly 

 parallel from humeral angles to middle, then arcuately converging to the tips, 

 which are separately, rather acutely angulated; basal depressions broad and 

 shallow; surface slightly uneven, glabrous, densely, finely, uniformly scabrous, 

 finely, transversely rugose basally. 



Abdomen beneath glabrous, rather coarsely, densely punctate, transversely 

 rugose at sides and on basal segments, the intervals finely granulose ; last visible 

 sternite more or less depressed, broadly, transversely sinuate at apex, with a 

 slightly elevated submarginal ridge; eighth tergite broadly rounded at apex, 

 vaguely, longitudinally carinate at middle on basal half, lateral margins strongly 

 elevated, and the surface coarsely, shallowly punctate, densely granulose, and 

 sparsely clothed with long, erect, black hairs. Prosternum glabrous, densely, 

 coarsely punctate, transversely rugose anteriorly; anterior margin truncate. 

 Tibiae straight or slightly sinuate, the middle and posterior ones armed with a 

 number of small teeth on their inner margins. 



Female. — Differing from the male in having the front of the head uniformly 

 purplish brown, the antenna cupreous, with a distinct bronzy-green tinge, and 

 the hairs on the segments much shorter, the clypeus usually with a small tooth 

 at middle, the middle and posterior tibiae unarmed on their inner margins, and 

 the underside of the body bronzy green, with a distinct cupreous or purplish 

 tinge. 



Length 9.5-15 mm., width 3.75-6 mm. 



^ Type locality. — Brigantine, N. J. Type in the United States Na- 

 tional Museum. 



DISTRIBUTION 



From material examined : 



Iowa : No definite locality. 



Missouri : No definite locality. 



New Jersey: Brigantine, type (R. J. and M. B. Sim), Seaside Park (R. J. and 



M. B. Sim, and R. O. Casselberry). Ocean City (R. C. Casselberry). Asbury 



Park (H. A. Kaeber). Atlantic City (H. Soltau). 

 New York: Yaphank (Long Island) and near New York City. 

 Pennsylvania: Harrisburg and Hummelstown (J. N. Knull). 

 Rhode Isiand: Watch Hill (W. Robinson). 

 Texas : No definite locality. 



Host. — Unknown. 



The dorsal surface of the body is rather uniform in coloration, but 

 the color on the scutellum varies from bronzy green to coppery brown, 

 and on the head of the male from green to bluish green, sometimes 

 with a distinct violaceous tinge. The longitudinal carina on the head 

 is frequently not bifurcate anteriorly, and sometimes there is a more 

 or less distinct, broad, crescent-shaped, smooth space below the vertex. 

 The clypeus is usually sinuate in front, but rarely it is shallowly, 

 arcuately emarginate. The antenna is variable in length, usually ex- 

 tending just beyond the anterior margin of the pronotum, but some- 

 times nearly to the base of the pronotum, especially in the males. The 

 sides of the pronotum are either slightly rounded anteriorly and 

 slightly constricted behind the middle, or converge from the anterior 

 angles to the posterior angles, which project either outward or back- 

 ward. The depressions on the pronotum are more or less variable in 

 depth. 



This species has been confused in collections with acornis Say, but 

 it differs from that species in having the antenna longer, extending 

 beyond the anterior margin of the pronotum, with the fourth segment 

 only slightly triangular, and the outer segments not wider than long. 

 The male genitalia are similar to those of acornis. 



