SOME NOIITH AMERICAN INSECTS. 187 



middle segment very broad; no groove: /ee/, like all beneath, dark 

 piceous; tarsi a little paler. — Length over one-fourth of an inch. 



This species is not perhaps in all its characters perfectly coincident 

 with those of the genus, particularly in the remote origin of the an- 

 tennae; but the form of the praesternum and the great inflection of 

 the head agree very well. 



5. 'E. frontosus. Antennae submoniliform ; thorax indented each 

 side of the middle -Inhab. Indiana. 



Body blackish piceous, with short yellowish hair, punctured ; frorit 

 longitudinally indented : antennse, ferruginous, serrato-moniliform ; basal 

 joint arcuated, obliquely truncated at tip ; second joint arcuated at base : 

 thorax with a longitudinal impressed line, and an indentation each 

 side of the middle ; posterior angles prominent : elytra^ striae not deeply 

 impressed: feet piceous — Length one-fifth of an inch. 



The very short and submoniliform joints of the antennae, as well as 

 the general form of the body, give to this species a resemblance to the 

 monilicornis, Mannerh., but the thoracic indentations, &c. distinguish it. 



6. E. riificornis, S. (Melasis rujicornis, Journ. Acad. N. S., III., p. 

 165.). This species, having a very small spine, and slight indentation 

 instead of a recipient cavity, may perhaps be placed here. By the 

 very robust antennae it seems to approach the genus Nematodes, Latr. 



7. E. ohliquus. Elytra black, inner portion, bounded by a line 

 from the middle of the base to beyond the middle of the length, yel- 

 lowish. — Inhab. Indiana. — Length less than one-fifth of an inch. 



In general form, and in its antennae, this species resembles the rufi- 

 cornis, S. 



* * Tarsi, terminal joint short and dilated. 



8. E. atropos. Thorax with two impressed dots and dorsal line. — 

 Inhab. Indiana. 



Body blackish piceous, somewhat sericeous, with bright yellow hair, 

 minutely punctured : head with the hairs radiating from the middle of 

 the front : antennse, first joint as long as the three next together, hardly 

 arcuated ; second joint at least as long as the fourth ; third nearly equal 

 to the fourth and fifth together ; remaining joints rather larger than 

 the fourth and fifth: thorax convex before, almost vertical at the sides; 

 VI. — 2 w 



