SOME NORTH AMERICAN INSECTS. 179 



distant than the length of their own diameters ; spines very short, 

 rounded at tip, compressed, without carina, and reflected a little from 

 the side : elytra paler, with dilated, punctured strias, and transverse 

 wrinkles on the interstitial spaces: heneath, excepting the pectus, rather 

 paler than the eljtra : tarsi, second and third joints produced beneath 

 into membranaceous lobes, that of the third more prominent ; fourth 

 joint minute, hardly wider than the base of the ultimate joint. — 

 Length three-tenths of an inch. 



Very much like cuculiatus, S. ; is smaller and more slender ; the 

 punctures of the head and thorax are not discoidal, as in that species, 

 and the thoracic spines are entirely destitute of carina, are more ob- 

 tuse, compressed, and reflected from the sides. Rare. 



53. E. claricollis. Black; antennae, mouth, and feet yellowish; 

 thoracic spines very short, without carina. — Inhab. Indiana. 



jBoJ?/ black, polished; punctures minute and remote: clypeus not 

 prominent, tip a little reflected and rounded : antennae, hardly as long 

 as the thorax, not serrate, yellowish ; first joint robust ; second joint 

 but little shorter than the third ; terminal joint not longer than the 

 penultimate one: mouth, excepting the tip of the mandibles, honey- 

 yellow^ : thorax polished, a little narrowed at the anterior angles ; late- 

 ral edge almost rectilinear, or hardly perceptibly arcuated from near 

 the anterior angles to the base; spines very short, obtusely rounded, 

 without any carina : scutel large, angulated behind : elytra with punc- 

 tured striae ; interstitial lines with minute, distant punctures : pectus, 

 in the middle near the mouth, honey-yellow: feet pale yellow ; tarsi, 

 fourth joint small, but produced beneath into a dilated lobe ; terminal 

 joint shorter than the first. — Length one-fourth of an inch. 



The thorax is remarkably polished. 



54. 'Ei.fmiiimus. Dusky, obsoletely margined with rufous; tarsi, 

 fourth joint lobate. — Inhab. N. Carolina. 



Body with dense, small punctures, black brown : vertex longitudi- 

 nally indented : clypeus obtusely rounded before, prominent : antennse 

 pale rufous, third joint a little longer than the second, terminal joint 

 not obviously contracted abruptly towards the tip : thorax rather nar- 

 rowed anteriorly, with an obsolete, dull, rufous margin and dorsal line ; 

 VI. — 2 u 



