76 GEO. H. HORN, M. D. 



punctured at middle ; more densely at the sides ; elytra wider than the thorax, 

 parallel, arcuately narrowed at apical third, the margins serrate, the apices oh- 

 tuse, disc moderately convex, basal fovea distinct and bright cupreous, the first 

 costa faintly indicated behind the middle by a smooth line, the surface densely 

 punctured, more sparsely toward the suture and posteriorly; body beneath 

 nearly black, densely punctured, the ventral segments very densely punctulate 

 at the sides and clothed with fine white pubescence, at middle much more coarsely 

 punctured, the basal margins of the last three segments smooth, the terminal 

 segment with the margins serrulate ; prosternum very distinctly lobed in front ; 

 anterior femur with a moderately large tooth, serrate in its distal edge. Length 

 .31 inch; 8mm. (Fig. 20.) 



Male. — Unknown. 



Female. — Prosternum flat, densely and coarsely, almost cribrately punctured ; 

 anterior tibia (24) slightly arcuate, the middle and posterior straight ; last ventral 

 segment (23) with a very small, semi-circular notch at tip. 



This species is closely allied by its prosternal lobe and the punc- 

 tuation of the abdomen to debilis, but ditt'ers from that species in the 

 almost total absence of elytral sculpture excepting the punctuation. 

 The ventral punctuation is also different, as the densely punctured 

 lateral region extends more to the middle and the median region is 

 more coarsely and closely punctate. The anterior tibi?e are bright 

 coppery red, Avhile the large humeral space is quite conspicuous. 



One specimen, southern Arizona ; two from Texas a little more 

 brilliantly colored. 



6. C. purpiireovittata n. sp.— Form moderately elongate, feebly de- 

 pressed, color bright blue or green, varying to violet or coppery bronze, each ely- 

 tron with a moderately broad purple-black vitta extending from the humeri 

 nearly to the tip, indistinct on the violet or bronze species, surface rather shin- 

 ing; antennfe cupreous, gradually more slender to the tip, the third joint very 

 little longer than the fourth ; front slightly convex, moderately densely punc- 

 tured, a slight arcuate carina near the top , clypeus rather broadly triangularly 

 emarginate, the notch oval at bottom, on each side arcuate , thorax about one 

 and a half times as wide as long, the sides straight and very slightly convergent 

 to base, anterior angles slightly rounded, disc moderately convex, surface regular 

 without inequalities, punctuation rather sparse at middle, den.ser and very 

 slightly strigose near the sides ; elytra a little wider than the thorax, parallel, 

 very slightly wider behind the middle, apical third rather obliquely narrowed, 

 the margin relatively coarsely serrate, the apices obtuse ; surface equal, without 

 costse or foveas, except the usual basal fovea and a moderate intra-humeral de- 

 pression, surface rather finely not closely, but quite evenly punctate ; body be- 

 neath similar in color to the upper surface, rather sparsely punctate, the ventral 

 segments without callosities, the margin of the last distinctly serrulate ; pros- 

 ternum very distinctly lobed in front; anterior femur with a small, very acute 

 tooth and a few denticulations more externally. Length .22- .29 inch ; 5.5-7.5 

 mm. (Fig. 25.) 



Male. — Prosternum slightly convex, a little more coarsely and closely punctured 

 than the elytra; anterior tibia (29) slightly arcuate, a short and leather narrow 



