AMERICAN COLEOPTERA. H»!< 



of pubescence, or the. reverse, on the front is merely a question of the 

 state of preservation of the species. 



From a slight examination which I have made of European species there 

 appears to be the same tendency to vary as is exhibited in the preceding 

 species. The amount of material at my disposal has been too meagre to indi- 

 cate positively the equivalence of several species but what occurs in one 

 fauna may be found in another. I am not by any means positive that our 

 species will prove different from some previously described from Europe, as 

 it will be observed that vmbellutarum and some of its allies very suspiciously 

 resemble the aggregate which is united under the name seneogaster L. et G. 



This species is the most widely diffused in our fauna. It occurs 

 in Maine, going west through Canada and the Northern States to the 

 Hudson's Bay region, to Colorado and Utah, thence westward to Oregon 

 and following the Pacific slope southward as far as Tejon in California. 



A. deleta. Lee. — Oblong, very little narrower posteriorly, color above and 

 beneath bright green with a tendency to become brownish on the elytra. Front 

 flat, densely punctured. Thorax broad, not narrower at base, sides feebly arcuate, 

 sometimes straight at middle and slightly arcuate at apex and base, hind angles 

 small, rectangular, disc even or with a feeble trace of impression on either side 

 of middle, surface reticulate at the sides, scabrous at middle. Elytra subopaque, 

 finely granulate, apices obtuse. Body beneath bright green, the surface reticu- 

 late, abdomen more shining. Claws slender, slightly dilated at base. Length 

 .16— .20 inch; 4—5 mm. 



In form this species resembles inornata. It is however much less 

 depressed and with finer surface sculpture. The color of the surface is 

 very uniform, the type in the cabinet of Dr. LeConte being discolored, 

 hence the different description. Bright green forms of inornata occa- 

 sionally occur, but these are always so rough in their sculpture that there 

 will be no difficulty in separating them from the present species. 



Occurs from Colorado to Nevada and California. 



A. viridi irons Gory. — Oblong, feebly convex, dark coppery bronze, more 

 shining beneath, head often green. Front slightly convex, a feeble frontal de- 

 pression, surface reticulate. Thorax broad, sides irregularly arcuate, disc moder- 

 ately convex, usually with two slight transverse depressions on each side which 

 are often. absent, surface regularly reticulate. Elytra narrowed at apical third, 

 apices obtuse, surface distinctly rugulose and subopaque. Prothor«x and body 

 beneath indistinctly reticulate, abdomen very sparsely punctate. Claws slender, 

 slightly broader at base. Length .16 — .20 inch; 4-5 mm. 



This species and viridicornis seem to bear the same relation to each 

 other that quercata and cyanella do. It is desirable that all of these 

 should be studied in their habits with the view of ascertaining if the 

 differences are not merely sexual. 



Occurs in the Middle, Southern and Western States 



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