1. CIMBEX. 7 



Female. Pitchy brown ; scutellum rufous ; collar, the hinder part 

 of the head, two depressions on the vertex within the eyes, and 

 the jaws and lower edge of the clypeus rufous ; antennae and tarsi 

 luteous. Abdomen with a yellow membrane at base, as in the 

 male ; basal segment violet-brown, the colour extending in a wedge 

 backwards over more or less of the following segments ; if it only 

 covers the first three or four, it is followed by a series of triangular 

 spots in the middle of the following segments ; in one case the 

 purple colour extends over the whole abdomen, leaving only a series 

 of five lateral yellow spots, as in typical uhni. Abdomen beneath 

 brown, the apical third deeper yellow than above. Eemora viola- 

 ceous; tibiae testaceous, sometimes brownish. "Wings as in 0. 

 americana. 



Klug regards this species as identical with his C. luctifera, with 

 which I am unacquainted. As we possess a long series, and the 

 male appears to be undescribed, I have thought it better to describe 

 both sexes in full. St.-Pargeau was unacquainted with the locality 

 of his specimen. 



Two of the largest males from Hudson's Bay have the club of the 

 antennae much more constricted in the middle than the others ; but 

 I am unwilling to describe them as distinct at present. 



Hab. North America. 



a. cT. Canada. 



b-m. $ § . St. Martin's Falls, Albany Dr. Barnston. 



River, Hudson's Bay. 

 n. 2 • Nova Scotia. Lieut. Redman. 



17. Cimbex luctifera. 



Cimbex luctifera, King, Verhandl. Berl. Ges. nat. Freunde, i. p. 71 

 (1829). 



Hab. Georgia. 



18. Cimbex semidea. 



Cimbex semidea. Cress. Trans. Amer. Ent. Soc. viii. p. 1 (1880). 

 Hab. W T hite Mountains. 



19. Cimbex pacifica. 



Cimbex pacifica, Cress. Trans. Amer. Ent. Soc. viii. p. 51 (1880). 

 Hab. Washington Territory. 



20. Cimbex rubida. 



Cimbex rubida, Cress. Trans. Amer. Ent. Soc. viii. p. 1 (1880). 

 Hab. California, Nevada. 



