t354 APPENDIX. 



Length two-fifths of an inch. 



Var. «. Spots and lines of the thorax obsolete ; feet, ex- 

 cepting the tarsi, black. 



This is an inhabitant of various parts of the United 

 States, from the North-west Territory to Arkansa, and is 

 common in Pennsylvania. 



NOMADA, Fabr. 



N. bisignata. Terminal half of the wings with a dusky 

 margin ; abdomen rufous, with a bright yellow spot each 

 side of the middle. 



Inhabits United States. 



9 Head ferruginous, front with a large, black spot, con- 

 fluent with another transverse one on the vertex ; occiput 

 and throat black ; antenn8eh\dick.is\\, beneath rufous ; stethi- 

 dium 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 

 ferruginous lines. 



EPEOLUS, Latr. 



1. E. lunatus. Tergum with two opposite lunules on 

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



