240 long's second expedition. 



witli another transverse one on the vertex ; occiput and throat 

 black ; antennae blackish, beneath rufous ; stethidium black, 

 varied with ferruginous, and like the head rough with dense 

 punctures ; thorax ferruginous, with a longitudinal black line ; 

 scutel ferruginous ; feet rufous ; thighs black at base ; wings 

 dusky, particularly on the margin of the terminal half; tergum 

 rufous, the segments on their posterior margins, and the basal 

 segment at base also black ; second segment with a large, lateral, 

 yellow spot, and a slight appearance of another on each side of 

 the third segment. 



Length rather more than three-tenths of an inch. 



This species varies in having the thorax black, with four fer- 

 ruginous lines. 



EPEOLUS Latr. 



1. E. LUNATUS. — Tergum with two opposite lunules on the 

 first segment, and three bands on the other segments. [3553 



Inhabits Missouri and Prairie du Chien. 



9 Body black ■ front with a whitish spot surrounding the 

 base of each antennas ; antenna3 black-brown, three basal joints 

 and labrum ferruginous ; thorax with two abbreviated, whitish, 

 longitudinal lines before the middle, a pale yellowish line on the 

 collar, another over the wings, passing round behind above the 

 scutel, a double line beneath the scutel, and an oblique sagittate 

 spot each side on the metathorax, also pale yellowish ; wings a 

 little fuliginous ; feet rufous ; thighs blackish in the middle ; 

 tergum velvet-black ; first segment with an angulated lunule on 

 each side, and a subterminal band on each side of the three fol- 

 lowing segments, of which the first is very slightly interrupted ; 

 terminal segment with a slight, oblique, cinereous spot on each 

 side. 



% Anterior half of the thorax with much of the pale 3'ellow- 

 ish color ; bands of the tergum larger than those of the female 

 and one more in number, feet nearly all blackish. 



Length half an inch. 



Smaller than U. A-fasciatus nobis, but much larger than B. 

 mercatus Fabr. 



2. E. SCUTELLARIS. — Thorax surrounded by ferruginous ; pos- 

 terior spines dilated. 



