ze 
EM. 
194 Harris on the genus Cychrus, 
* Catalogue of the Insects of Massachusetts," appended 
to Prof. Hitchcock’s * Report on the Zoólogy," &c. of 
the State. From the víduus it differs not only in color, - 
but in being of a more dilated form. The thorax is of 
a deep violet color above, it is wider behind, not angu- 
lated at the sides, approaching more nearly to the form 
of a square, the lateral margin is wider, and the poste- 
rior angles are larger and not quite so obtusely rounded. 
The elytra are rather broader, rather more heart-shaped, 
very evidently eneous, and both the strie and the 
punctures, which form’ their crenated indentations, are 
more distinct. In the viduus the thorax is blue black 
or greenish black, somewhat angulated at the sides, 
or, as Knoch very correctly says, “ hexagonal."* The 
-elytra are of a longer ovate form, are destitute of the 
brassy lustre, or are only faintly tinged with copper 
color; and Knoch, who gives to this species the name 
of unicolor, says it varies in being entirely black. | 
I am indebted to the Rev. Levi Washburn Leonard 
for a specimen of the species which I have dedicated 
to him ; and Dr. Gould has received from New Hamp- 
shire and. Vermont several specimens, four of which I 
have examined in drawing up this description. The 
true viduus has not, as yet, been found in this vicinity. 
In the form of the thorax, the viduus and this new 
species recede from all the others of the genus which 
I have seen; and "aureas more Santy to the - 
ScapHinotus, in this respec 
* Neue Beytrage zur Insectenkunde, p. 187. 
