dilated, with spines beneath, placed irregularly; 

 a prominent projecting angle near the tip: ter- 

 gum black ; basal segment on the lateral margin 

 ochraceous; second segment with a large sub- 

 quadrate, ochraceous spot each side, approaching 

 the middle where it is longer than on the mar- 

 gin, posterior edge ochraceous ; third segment 

 with also a large subquadrate, ochraceous spot 

 each side, approaching the middle where it is 

 longer than on the margin, it reaches the basal 

 suture, posterior edge ochraceous ; fourth seg- 

 ment ochraceous at tip: venter yellowish- white, 

 blackish at tip. 



OBSERVATIONS. 



The specimen is a female, and was captured 

 in Pennsylvania. By its form of body, and the 

 character of the hypostoma, it approaches the 

 genus Eumerus, Meig. 



The upper right figure of the plate. • 



PLATE VIII. 



