THE TENTIIREDINOIDEA 365 



spots at apex of coxno, anterior surface of fore and medial femora 

 band on basal two-thirds of posterior femora, tibia) except small spot 

 at apices, tarsi except spots above; wings hyaline, nervures and 

 stigma. 



ISIale : Length 10.5 mm.; body narrower than in the female; 

 sculptured and colored as in female, but the spots on the prono- 

 tum are reduced or absent, the band on the basal segment is wanting, 

 venter entirely yellow, coxae yellow, femora, tibice, and tarsi black 

 above yellow beneath ; posterior tarsi entirely black. 



Two females and four males, Popof Island, July 14. 



Type no. 5309, U. S. National Museum. 



Taken upon the flowers of Heracleum lanatuin. 



Family CIMBICID^. 

 CIMBEX AMERICANA. 



Citnbex aviericatia Leach, Zool. MiscelL, iii, Tab. 61, 1817. 



A single specimen captured on Kadiak Island by Mr. L. Cole. 

 This is a variety of this variable species in which the body is entirely 

 blue-black, white maculations being entirely absent, and the wings are 

 clear with some yellow spots along nervures. 



TRICHIOSOMA TRIANGULUM. 



Trichioso7na triangidiini var. aleutiaiia Cresson, Trans. Am. Ent. Soc, vill, 

 p. I, 1880. 



Five specimens from Kukak Bay, Kadiak Island, and Popof Island. 

 The specimens agree perfectly with those of the above species in the 

 collection of the American Entomological Society. 



