ISO DESCRIPTIONS OF AND OBSERVATIONS ON 



posterior angles very slightly excurved, rather long, acute, with the 

 carinated line very near to the edge: scutel dull rufous: elytra with 

 the striae impressed, not confluent, and in which the punctures are not 

 very obvious; interstitial lines depressed; an obsolete, rufous, humeral 

 spot, and another on the middle of the exterior submargin: beneath 

 pale rufous: feet paler; penultimate joint of the iarsi with a membra- 

 naceous lobe. — Length three-tenths of an inch. 



The body is more elongated than either dilecfus, S., or bisectus, S. 

 I am indebted to Dr Harris for an opportunity to examine a specimen. 



55. E. decoloratiis, Harris, MSS. Black ; elytra, antennae and feet 

 rufous. — Inhabits New Hampshire and Pennsylvania. 



Body blackish, w ith pale hairs, and minute punctures : clypeus with 

 larger punctures than the thorax; two obsoletely impressed diverging 

 lines ; anterior edge subangulated, and the angles so depressed as to 

 appear confluent with the anterior part of the head : antennx rufous, a 

 little hairy; second joint two-thirds the length of the third; last joint 

 longer than the first, not abruptly contracted towards the tip : thorax 

 convex, blackish; base with a fissure each side; posterior angles point- 

 ing backward, rather obtuse and somewhat broad, with the carinated 

 line rather short, and not much elevated: elytraAxxW rufous; impressed, 

 slightly punctured strias, more deeply indented at base, and the third 

 and fourth confluent before the tip: feet pale rufous; fourth joint of 

 the tarsi not so distinctly lobed as the preceding joints. — Length half 

 an inch. 



Rare in Pennsylvania. Approaches the description of E. semirufus^ 

 Germar, which, however, I believe to be smaller. 



1 1 1 Tarsi dilated, operculiform. 



56. E. marmoratus, F. Our largest species of this division that I 

 have seen. I have found it as far north as Canada, and Mr Nuttall 

 presented me a specimen from Arkansa. It occurs both in Pennsyl- 

 vania and Indiana, and Dr Harris sent to me a specimen which was 

 found in N. Carolina. The thorax may be described as unequal, as 

 it has several indentations; the pectus has deeply impressed tarsal 

 grooves; and the clypeus is concave. 



