270 GEO. n. HORN, M.D. 



33. C lalicollis. Say.— Very like the preceiling species and difTers in 

 Iiaving a brosidt'i- thorax, very feebly sinuate near the base, disc rather loss 

 densely punctured and more convex. Antennse entirely rufous. Body be- 

 neath as in dijfinis. Metasternal episterna long. Length .60 — .62 inch; 12.5 

 — 15.5 mm. 



Anterior femora of male with a short spine near the base. 



This species is the rujipes of our present collections. The name 

 must, however, be suppressed for reasons given under the preceding 

 species. 



Occurs from New York to Arizona and Florida. The specimens 

 from Arizona are smaller than those from Texas and l^ouisiana, and 

 the color above is an uniform dark violet-blue. 



34. C'. orbus, Horn. — Body beneath and legs black, above black rarely 

 with a bluish tinge. Antenuse entirely black. Similar in form to the pre- 

 ceding but with a broader thorax, not sinuate posteriorly. The elytral strife 

 are very fine, and the punctures distinct but distant, intervals very finely, 

 sparsely but indistinctly punctured. Body beneath as in diffinis. Metasternal 

 episterna long. Length .60— .68 inch; 15 — 17 ram. 



Anterior femora of male simple beneath. 



There need be no difficulty in distinguishing this species. It is tiie 

 only one in our fauna in this group, with black legs. 



Occurs only in Texas, the other locality given by Chaudoir is 

 erroneous, as Fuch's specimens were in all probability from Belfrage, 

 and not collected in the " Etats du centre." 



35. C cursor, Chevr. — Beneath black, legs pale, above bluish-green. 

 Head very sparsely punctate, antennas rufous. Thorax similar in form to 

 viridifrons, rather more convex, hind angles more obtuse, disc more shining 

 and with coarse punctures very sparsely scattered. Strise extremely Sne, 

 intervals sparsely and very ohsoletely punctulate. Prosternum scarcely mar- 

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

 sternal episterna as in viridifrons. Abdomen more sparsely punctate at middle 

 than usual in the group. Length .54 inch; 13.5 mm. 



Occurs in the south of California, also in the Peninsula and in 

 Mexico. 



The metasternal episterna are shorter than usual, but not to the 

 extent seen in the dijlinis group. 



36. C Cliaudoiri, n. sp. 



This species so nearly resembles the eastern forms of sen'i-eiis as to 



need no description, the differences being as follows : 



Thbrax very little wider than long, surface with very coarse punctures rather 

 sparsely placed, and rather more shining. Length .60 inch ; 15 mm. 



The color is bright green as in our ordinary forms of scriceus, the 



