AMERICAN COLEOPTERA. 



131 



Short transverse middle band, almost attaining the margin, usually apical dot. 



transTeriiia. 



Complete, sinuate, middle band, apical dot, anteapical dot (lacking in UmbaHs 



Lee), humeral and post-humeral dots, the humeral often indistinct or 



lacking limbalis. 



Green above; sometimes with cupreous reflection on thorax. 



Markings like purpurea, thorax coppery graiiiiiiea. 



Thorax green laiita. 



Markings like transversa «leii vereiisis. 



Markings like limbalis spreta. 



Bluish green above and beneath, elytra greenish or coppery. 



Markings like transversa. I udoviciana. 



Black above and beneath. 



Markings like purpurea Aiiaiiboiiii. 



Apical dot only or immaculate plutonica. 



Typical purpurea Oliv. Reddish cupreous, margins and suture 

 of elytra and depressions of thorax brilliant green ; beneath bluish 

 green ; markings consist of an oblique scarcely sinuate middle band 

 not attaining the margin and an ai)ical dot. These are always present 

 and usually there is also an ante-apical dot, and sometimes even a 

 humeral dot as well. The color is often more or less greenish, and 

 specimens occur which cannot be distinguished from the graminea of 

 Colorado. 



Occurs throughout the range given for the species. 



Var. transversa n. var. — Color of purpurea from which it differs by the 

 middle band, which is short and transverse, situated almost at the extreme 

 margin of the elytra. The difference is slight and does not seem to be supported 

 by geographical distribution, and I have assigned a name, partly becau.se I have 

 frequently seen this form separated in collections and usually erroneously classed 

 as spreta. 



Occurs in 111. and N. J. 



Var. limbalis King, 1834, Jahrb. i, 29; limbalis Lee. Ann. Lye. iv, 177; 

 Schaupp, I. c, p. 90, pi. 2, figs. 42, 43, 44. 



Color of purpurea (greenish specimens are spreta), markings con- 

 sist of a long sinuate middle band starting from the margin trans- 

 versely, and several dots ; when complete there are four, representing 

 the apical and humeral lunule, but any of them may be lacking, 

 except the apical, which is the most persistent all through the 

 varieties of this species. 



Occurs in Manitoba; Maine; K J.; 111.; N. Y. ; Ky. ; Ohio; 

 Iowa; AVis. ; Colo.; Kan. 



TEANS. AM. ENT. SOC, XXVIII. APRIL, 1902. 



