112 (4E0. H. HORN, M. D. 



given by Dr. LeConte are, unfortunately, reversed, the dilatation of 

 the anterior tibiae indicating the male not having been observed. 

 Occurs in Texas near the Rio Grande, and at Matamoras, Mexico. 



43. C sexsigiiata Say. — Form and fac-ies very like the small varieties of 

 femornta, color jiiceous, with a faint bronze surface lustre, each elytron with 

 three golden or brassy spots, one basal, two dorsal ; body beneath bright green, 

 the sides bright cupreous ; antennje green in both sexes, gradually more slender 

 to the tip, the third joint as long as the next three; front flat, bright green % , 

 cupreous ^ , coarsely not densely punctured, a chevron near the top, below it a 

 transverse line thicker at middle ; clypeus (213) triangularly emarginate, at mid- 

 dle arcuate on each side, resembling femorata ; thorax twice as wide as long, ab- 

 ruptly narrowed in front, sides very slightly arcuate and gradually convergent 

 posteriorly, the hind angles obtiise ; disc moderately convex, a vague median de- 

 pression posteriorly, a subapical, oblique impression, frequently an oblique de- 

 pression from the anterior angles toward the scutellum; surface coarsely and 

 densely punctured, more or less transversely strigose ; elytra wider than the 

 thorax, sides nearly parallel in front, very obliquely narrowed behind the middle, 

 the margin serrulate, the apices obtuse ; disc feebly convex, the first costa nearly 

 entire, the others represented by faintly elevated smooth lines, a shallow fovea 

 one-third from apes at the end of the third costa, another larger on the second 

 costa in front of the middle, the basal fovea moderately deep, the humeral de- 

 pression feeble, the surface coarsely, closely punctate; body beneath with mod- 

 erate puTictures, sparse at middle, rather dense at the sides of the abdomen, the 

 ventral segments with feeble callosities, the hind angles not prominent; last 

 ventral segment with entire margin; anterior femur with a moderate tooth, 

 sinuate and serrate on its distal edge ; prosternum not lobed in front. Length 

 .26 -.50 inch; 6.5-12.5 mm. (Fig. 212.) 



Jlfa^e. —Prosternum flat, densely punctured, sparsely piibescent; anterior tibia 

 (216) arcuate, not dilated at tip, serrulate within ; middle tibia less arcuate and 

 less serrulate ; posterior tibia straight ; last ventral (214) finely carinate at mid- 

 dle, semi-circularly emarginate at tip, the angles acute ; last dorsal coarsely punc- 

 tate, apex entire. 



Female. — Prosternum a little more coarsely punctured ; anterior tibia feebly 

 arcuate, the middle and posterior straight ; last ventral segment (215) strongly 

 carinate at middle, the apex truncate, the angles slightly prominent. 



This species represents in this series /e^n orate in the other, many of 

 its characters of form, sculpture and sexual modifications are similar, 

 as will be seen on comparison. 



Occurs from New York to Virginia, westward to Nebraska and 

 Indian Territory. 



44. C. aziirea Lee. — Form rather broad, subdepressed, color variable from 

 blue to greenish blue, violet or cupreous, beneath blue, the sides of the abdomen 

 sometimes cupreous; antennse greenish % or bronze ?, gradually more slender 

 to the tip, the third joint nearly as long as the next three ; front slightly convex, 

 coarsely and rather closely punctured; clypeus (218) very broadly not deeply, 

 triangularly emarginate at middle, on each side slightly arcuate ; thorax nearly 



