272 GEO. n. HORN; m. d. 



3tf. C orytliropilM, Germ.— Resembles the preceding and riifTers in having 

 the thorax narrower, distinctly sinuate posteriorly, the antinnse always [laler. 

 Size as in the preceding. 



The anterior feini)ra of male subanculate at base. 



Occurs from Oliio te Nebraska and Louisiana. 



Some specimens collected by Mr. H. A. Brous, in Kansas, have a 

 decidedly bluish tinge. 



40. C viritlifrons, Esch. — Body beneath black, above variable, usually 

 dark blue, often with the head and thorax slightly greenish. Head puncture(J 

 as in fsericeus, antennae rufous. Thoras broader than long, base seareiOy wider 

 than apex, sides arcuate in front, rather strongly sinuate behind, hind angles 

 rectangular, disc rather flat, densely punctured, rather more sparsely on each 

 side of middle. Elytra slightly obovate, stria extremely fine, distantly punc- 

 tured, intervals finely but not densely punctulate. Prosternum feebly mar- 

 gined at tip, sparsely punctured in front, episterna sparsely punctate. Meta- 

 sternal episterna moderate densely punctured. Abdomen as in nericetts. Legs 

 pale. Length .50 — ,56 inch; 12.5 — 14 mra. 



Anterior femora of male simple. 



The motasternal episterna in this species are less elongate than in 

 the majority of those with which it is associated, but by no mean^ as 

 short as in dijffinis and its allies, the outer side still remaining some- 

 what longer than the anterior. 



This species occurs in California, more commonly south of the 

 latitude of San Francisco. 



41. C. licrl»aceus, C'hevr. — Body beneath black, legs pale, above bright 

 green, elytra slightly darker. Head coarsely punctured posteriorly, wrinkled 

 above the eyes, middle and front nearly smooth, labrum truncate, antennae 

 rufous. Thorax as long as wide, sides moderately arcuate in front, a long 

 sinuation posteriorly, hind angles rectangular, disc convex, basal impressions 

 moderate, surface regularly covered with deep coarse punctures. Elytra finely 

 striate, strise with fine rather distant punctures, intervals very finely and 

 sparsely punctulate, sparsely pubescent. Prosternum not margined at tip, 

 sparsely punctured in front, episterna coarsely and n)odei'ately densely punc- 

 tured. Metasternal episterna long, obsoletely punctured and scarcely mar- 

 gined. Abdomen as in cursor, last segment margined with testaceous. Length 

 .50— .64 inch ; 12.5—16 mm. 



Anterior femora of male simple. 



The prosternal epipleurae are narrow, but broader behind than 

 in front, and vertical so that the sides of the thorax are obtusely 

 margined. The aflBnities of this and the next species are too plain 

 to be mistaken, and Chaudoir has done properly in placing tliem 

 together. 



Occurs in Georgia, Florida and Mexico. The specimens from the 

 latter region are much larger. 



