80 GEO. H. HORN, M. D. 



Clypeus with a truncate median lobe, a slight sinuation on each side ; anterior 



tibia % as in cuprascens 10. floi'ieola. 



Clypeus with an oval or broad emargination at middle. 



Color coppery bronze, or some slight variation of that. 



Tooth of anterior tibia % slender, acute and one-third from the apex. 



11. ignicollis. 

 Tooth of anterior tibia % triangular, very near the tip. .12. speculifer. 

 Color bright blue or greenish ; tooth of anterior tibia % rather large, trian- 

 gular and acute, very near the apex 13. Tiridioyanea. 



The species of this group, with the exception of floricola, belong 

 to the region of Colorado and Texas, westward to California and 

 Oregon.- The first mentioned {florkohi) belongs to the Atlantic 

 region proper. 



8. C'. eoiitigiia Lee. — Moderately elongate, subdepressed ; color above dark 

 bronze, moderately shining ; thorax somewhat cupreous, beneath usually cupre- 

 ous; antenuse gradually more slender to tip, with greenish % or cuxireous 9 

 lustre, third joint as long as the next two; front flat and densely punctured, 

 greenish and pubescent % or slightly convex, less densely punctured, cupreous 

 and not pubescent 9 \ clypeus (36) with a small acute notch at middle, on each 

 side a small acute tooth and sinuate ; thorax twice as wide as long, base and apex 

 equal, sides obliquely narrowed at apex, nearly parallel at middle, then slightly 

 narrowed at base; disc rather uneven, median depression feeble, with a distinct 

 impressed line posteriorly, post apical transverse impression distinct; surface 

 coarsely and not densely punctured" at middle, more densely, almost cribrately 

 punctured at the sides ; elytra wider than the thorax, parallel, narrower at apical 

 third, the margin serrulate, the apices obtuse ; surface irregularly sculptured, the 

 first eosta distinct at apical half, the others confused, intervals coarsely, densely 

 punctured, with an irregular smoother space behind the middle, a second near the 

 apex, basal and humeral depressions distinct ; prosteruum distinctly but feebly 

 lobed in front ; body beneath shining, coarsely not densely punctured ; anterior 

 femur with a small tooth, not visibly, serrate. Length .28 - .42 inch ; 7 - 10.5 mm. 

 (Fig. 35.) 



Male. — Prosternum very densely punctured, sparsely pubescent ; anterior tibiae 

 (39) slightly arcuate, a little thicker at tip and with a broad, rather obtuse tooth 

 below the middle ; middle and posterior tibise straight ; last ventral segment (37) 

 with serrulate margin, the ajiex with a small semi-circular emargination; last 

 dorsal sparsely punctate, apex emarginate. 



Female. — Prosternum coarsely not densely punctate ; anterior tibiae slightly 

 arcuate not dilated nor toothed ; middle and posterior straight ; last ventral seg- 

 ment (38) with serrulate margin, and with a very small emargination at tip; last 

 dorsal very coarsely punctate and entire. 



This species shows very little variation in the color of its surface, 

 but the sculpture is slightly variable and difficult to describe without 

 being individual. In appearance it resembles some of the forms of 

 femorata. With this species begins a small series in which the male 

 has the anterior tibia toothed at some point below the middle, of 



