22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 00 



Type locality. — Fresno, Calif. 



Types. — Three males, paratypes four females, Cat. No. '28-v>6, 



U.S.N.M. 



Distribution. — CAmroRNiA: Fresno, March 15-May 13, 1900 (E. A. 



Schwarz), March 17-May 12, 1923 (M. E. 



Phillips). 



Montana: Glacier Park, June 28, 1921 (H. G. 



Dyar). 

 Nevada: Fallen, May 28 (F. C. Bishopp). Pyra- 

 mid Lake, July (J. M. Aldrich). 



EUSIMULIUM BOREALE (Mallocli) 



Piosimullam harealis Malloch, Kept. Can. Arctic Exp., 1913-18, vol. 3, 

 1918, p. 418. 



A species easily characterized by the presence of a tuft of pile on 

 the membranous part of the mesopleura (the anepisternal cleft of 

 Crampton). Body grayish black with dense pale pile unusually 

 long on the scutelluni ; fore tarsi very slightly broadened ; liind basi- 

 tarsus with slight projection; hind second tarsus without doi-sal 

 incision; claws with basal tooth; wing veins with dark brown piios- 

 ity. Female hypopygium similar to minus and clanim, but each 

 arm of the genital rod bears a very large blunt tooth, the plates 

 are wider and slightl}^ more nearly surround the genital orifice. 

 (Fig. 43.) 



Type locality. — Woolaston Peninsula, Victoria Island. Type in 

 the Canadian National Collection. 



Three females at hand. ^ 



Dist'nhufion. — Montana: Two Medicine River, July 27, 1921 

 (H. G. Dyar). 



EUSIMULIUM CANONICOLUM, new species 



As in horeale, smaller; membrane of mesopleura Avithout tuft of 

 pile. Female hypopygium as in hareaU. (Fig. 43.) 

 2'ype locality. — Yellowstone Canyon, Wyo. 



Type. — Female, parafypes two females, Cat. No. 28337, U.S.N.M. 



Distribution. — California : Summit, Placer County, July 19, 1915 



(H. G. Dyar). Fallen Leaf Lake, June 4, 191G 



(H. G. Dyar). 



Colorado: Grand Lake, June 19, 1923 (H. G. 



Dyar). 

 Idaho: Albion (J. M. Aldrich). 

 Wyoming: Yellowstone Canyon, July 1-6, 1922 

 (H. G. Dyar). Mammoth Hot Springs, July 14, 

 1922 (H. G. Dyar). 



