SOME NORTH AMERICAN INSECTS. 181 



57. E. operculahis, S. (Ann. Lye. N. Y.*). Belongs to this divi- 

 sion. Dr Harris sent me specimens from Massachusetts and New 

 Hampshire. 



58. E. auroratus. Blackish, sprinkled with golden scales ; pectoral 

 tarsal impressions not profound. — Inhab. New Hampshire. 



Body blackish, punctured, with bright yellow scales : clypeiis not 

 conspicuously concave before: thorax convex; a longitudinal, im- 

 pressed, but not much dilated line, obsolete on the anterior third ; late- 

 ral edge regularly arcuated to the origin of the posterior angles, which 

 are rather broad, acute, and extending outward and backward, with 

 their exterior edge perfectly rectilinear to the tip; basal edge sinuous: 

 elytra destitute of elevated lines at base: pectus^ tarsal impressions not 

 deeply marked, but distinct, concave: tarsi rufous. — Length eleven- 

 twentieths of an inch. 



Sent to me for examination by Dr Harris. The lateral edge of the 

 thorax is not undulatedly arcuated, as in E. marmoratus, F., and E. 

 operculatus, S. 



59. E. ohtectus. Thorax with a much dilated groove; elytra with 

 elevated lines at base, one of which extends beyond the middle.— In- 

 hab. Massachusetts. 



Body blackish piceous : clypeus transversely concave before : thorax 

 rather short and wide ; dorsal groove much dilated, the top of its late- 

 ral elevations being equidistant from the middle of the exterior edge ; 

 exterior edge arcuated, not undulated ; lateral margin broadly depressed ; 

 posterior angles rather broad, extending outwards and backwards, their 

 exterior edge rectilinear to the tip : elytra with elevated, obtuse lines 

 at base, one of which is obliquely elongated and is obsolete behind the 

 middle : tarsal groove of the pectus none. — Length three-fifths of an 

 inch. 



For this species I am indebted to Dr Harris. It is as large as mar- 

 moratus, F., and operculatus, S., to the latter of which it approaches in 

 being destitute of the tarsal grooves of the pectus, and in the short, 

 wide thorax; but it differs from it in the more regular arcuation of the 

 lateral edge of the thorax, the exterior edge of the posterior angles 



* [This is an error. There is no species in the Ann. Lye. N. Y. bearing the name of 

 operculatus. Is it not the erosus, S., Ann. Lye., L, p. 258? — H.] 



