30 



of the posterior tibiae very long. Striae of the elytra not cre- 

 nated or punctured. In form this species is more flattened 

 than the others, and the thorax is proportionally shorter. The 

 anterior tibia? and intermediate tarsi of the female have the 

 usual conformation and the colors of the only two specimens 

 are less brilliant. 



Second, probably Cr. excrementi Say, more convex than the 

 others, thorax so gibbous as nearly to resemble a quarter of a 

 sphere, more than one third the length of the body. Anterior 

 tibiae of the male, as in the first species ; intermediate tarsi simple, 

 spines short or moderate. Color black, polished, and slightly 

 bronzed, striae very slightly crenated within, beneath chalybe- 

 ous black. 



The third species in form more nearly resembles the second 

 than the others ; the body is not quite so thick and convex ; 

 color brilliant green, bronzed, sometimes cupreous, beneath 

 bright chalybeous and light green; thorax proportionally 

 stouter, body proportionally more oblong than in the second 

 species, thorax not gibbous. Striae with small punctures within. 



Fourth species. Broad, convex, dark green. Striae with 

 deep, distinct punctures ; club of the antennas large, ful- 

 vous ; anterior tibiae of male, as in the second species, green- 

 ish-black beneath, with dense ferruginous hairs. 



The fifth species somewhat resembles the second, but is 

 smaller and less brilliant, and not so broad in proportion. 

 Striae of the elytra indistinctly crenato-punctate ; club of an- 

 tennae small, dark brown ; thorax with a longitudinal, deeply 

 impressed line ; beneath polished black, hairs minute and 

 distinct. 



Length of No. 1, ^ in., breadth, -^ in. ; No. 2, over -^ in., 

 by nearly ^ in. ; No. 3, ^ in., by ^ in. ; No. 4, ^ m . ? by 

 nearly ^ in. ; No. 5, nearly -^ in., by 2 ^ in. and over. 



