140 Journal New York Entomological Society, f^'o^- >^xii. 



mm., by the slight flattening of the disk of the elytra, the presence of 

 the seta of the posterior coxa, and by the first joint of the male 

 anterior tarsi being spongy pubescent over at least half its under 

 surface. 



The range of 5". clcvatiis is greatly extended, from Massachusetts 

 to Florida on the Atlantic coast and inland to Missouri and Nebraska, 

 but it varies in many respects and has been subdivided into several 

 subspecies. In the northern Atlantic states one finds the typical 

 elevatus with moderately elevated thoracic margins and cupreous 

 elytra; along the coast, especially from Virginia southward, one finds 

 darker colored specimens in which the margins of the thorax are 

 more reflexed and approximated, making the insect look narrower. 

 An extreme example of this tendency was taken by Mr. Geo. P. Engel- 

 hardt in the Dismal Swamp, Virginia. The name unicolor was 

 formerly applied to this dark narrow form, but erroneously, and Dr. 

 Roeschke has called it tcnchricosus'^ defining the subspecies as follows: 

 " Completely black or with feeble violet tinge ; narrow, compressed 

 form; sides of thorax very broad and greatly elevated with very sharp 

 hind angles, or even pointed wings, which project far over the elytra; 

 disk of thorax dull, simply granulate, not or scarcely punctured." It 

 will be seen that most of the darker specimens approach rather than 

 comply completely with this definition. 



Across the Allegheny Mts., 5". clcvattis varies similarly in color, 

 but whatever the color, the variation in form takes an opposite direc- 

 tion, the hind angles being flattened down and broader, the whole 

 insect shorter, broader and flatter. The first name applied to this 

 form was flammeus by Haldeman, the type coming from Marietta, 

 Ohio, on the Ohio River, and opposite West Virginia. The descrip- 

 tion is short " Elytra pale brilliant violet, distinguished from elevatus 

 by the wider prothorax and elytra and lighter color; profile flatter 

 above when viewed laterally." The color described is unusual and led 

 Dr. Leconte to redescribe the more usual form from the western 

 states. The actual description appeared in 1848- under the name 

 flammctis and dilatafus was substituted in 1853^ when Dr. Leconte 

 discovered that his insect and Haldeman's were not identical. The 



1 Mon., p. 141. 



2 Ann. Lye. Nat. Hist. N. Y., IV, p. 440. 



3 Trans. Am. Phil. Soc, X, p. 398. 



