A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 225 



Female. — Broadly elongate, slightly convex above, rather strongly shining, 

 piceous with distinct bronzy-green and purplish tinges, each elytron ornamented 

 with three depressed cupreous f oveae ; beneath bluish green, with sides, and legs 

 in part, brownish cupreous. 



Head purplish brown, the lateral margins, and anterior margin of clypeus, 

 greenish, with a vague longitudinal carina on occiput, a very small,, indistinct 

 chevron on vertex, and a broad, transverse elevation below chevron ; front flat ; 

 surface coarsely, rather densely, irregularly punctate; sparsely clothed with 

 rather long, semierect, inconspicuous hairs ; clypeus deeply, angularly emarginate 

 in front, subtruncate on each side. Antenna purplish brown, with a more or 

 less distinct bronzy-green tinge, slightly narrowed to apex; intermediate seg- 

 ments compact, as wide as long, broadly rounded at outer margins; third seg- 

 ments slightly longer than following three segments united. 



Pronotum nearly twice as wide as long, slightly narrower at apex than at base, 

 widest near apex ; sides slightly, obliquely converging from near apical angles 

 to posterior angles ; anterior margin broadly, arcuately emarginate, with an ob- 

 scure, broadly rounded, median lobe ; base broadly, angularly emarginate on each 

 side, median lobe strongly produced, subtruncate in front of scutellum; disk 

 slightly convex, with a vague, broad, median depression posteriorly, and a 

 transverse depression on each side behind anterior margin; surface coarsely, 

 transversely rugose, densely granulose, sparsely, coarsely punctate between 

 rugae, clothed with a few very short, inconspicuous hairs at sides. Scutellum 

 green. 



Elytra distinctly wider than pronotum, nearly twice as long as wide, widest 

 behind middle; sides feebly diverging from humeral angles to behind middles, 

 then arcuately converging to tips, which are separately narrowly rounded ; 

 lateral margins distinctly serrate ; basal depressions broad and deep ; humeral 

 depressions broad and shallow ; surface glabrous, coarsely, rather densely, 

 irregularly punctate, intervals smooth. Each elytron with four smooth, longi- 

 tudinal costae ; first distinct, sinuate near apex, extending from base to apex ; 

 second and third slightly elevated, broadly interrupted; fourth distinct, fol- 

 lowing outline of lateral margin; and with three depressed cupreous foveae, 

 one in basal depression, one on second costa in front of middle, and the other 

 on third costa at apical third. 



Abdomen beneath finely, sparsely punctate at middle, more densely punctate 

 at sides, rather densely clothed at sides with moderately long, recumbent 

 hairs, without distinct lateral callosities ; last visible sternite shallowly, ar- 

 cuately emarginate at apex, longitudinally carinate at middle, without a 

 submarginal ridge, lateral margins not serrate; eighth tergite densely, coarsely 

 punctate, broadly rounded at apex. Prosternum coarsely, rather densely punc- 

 tate, transversely rugose anteriorly, sparsely clothed with long, semierect, 

 whitish hairs; anterior margin truncate, with a short, broad, median lobe. 

 Anterior femur with a large, obtusely angulated tooth, which is dentate on outer 

 margin. Anterior and middle tibiae arcuate, unarmed at apices; posterior 

 tibia straight. 



Length 10 mm., width 4 mm. 



Kedescribed from a female in the United States National Museum, 

 collected at Frankford, Pa., June 18, by A. Schmidt. 



Male. — Differing from the female in having the front of the head bright 

 green, becoming brownish cupreous on vertex and occiput, the antenna bright 

 green to bronzy green, the last visible abdominal sternite shorter and broadly, 

 deeply, arcuately emarginate at apex, and the prosternum more densely punc- 

 tured, especially at middle. 



Type locality. — Of quadrimaculata, Pennsylvania; present location 

 of type unknown. Of sexsignata, Missouri and Atlantic States ; type 

 probably lost, Of ignipes, Boston, Mass.; type in the British Mu- 

 seum. Of germari, North America; type supposed to be in the 

 collection of Rene Oberthiir, but has not been examined by the writer. 



Distribution, — Specimens have been examined from Ontario, the 

 District of Columbia, and various localities in the following States: 

 Connecticut, Florida, Illinois, Iowa, Kansas, Maine, Maryland, Mas- 



416206—42 15 



