2 University of Michigan 



mer of 1912, and more than fifty specimens were secured by 

 Misses C. and H. Thompson at White's Woods near Ann 

 Arbor, Michigan, Jnne 2 and 11, 1912. Several specimens that 

 probably belong to this species were taken at Alma, ^Michigan, 

 by Professor H. ]\IacCurdy during the spring of 1910. 



PolyartcrnicUa Inuisciii (Murdoch). — Collected at the fol- 

 lowing localities by J. 3il. Jessup : Muskeg Lake, Coastal Plain 

 of Arctic Ocean, Lat. 69' 40' X.. Long. 141'^ W., July 25, 1912 

 (with Branchinecta paludosa) ; ^luskeg pools on flood plain of 

 Firth River, Lat. 69° 20' N., Long. 141^ W., June 23, 1912. 



Branchinecta paludosa (O. F. ^Miiller). — [Nluskeg Lake, 

 Coastal Plain of Arctic Ocean. Lat. 69° 40' N., Long. 141° W., 

 July 25, 1912 (with Polyartemiella lianseni) ; young in puddle 

 at White Horse, Yukon Territory, June 7, 1912. 



Enbraiichipus gelidus Hay.- — In pools on flood plain of 

 Klondike River, one mile above Dawson, May 27, 191 1 ; puddle 

 at White Horse. Yukon Territory, June 7, 1912; on Old Crow 

 River, in pool, fifty miles north of Rampart House; in ponds 

 near Carmack's, Yukon Territory ; small puddle, Norden 

 Skiiold, Yukon Territor}-, June 3, 1912; Ann Arbor, Michigan, 

 May 3, 1912. 



Jessup's northern records greatly extend tlie range of this 

 species which has not been previously recorded north of Massa- 

 chusetts nor west of Indiana. 



BubrancJiipus vcrnalis Verrill. — Specimens have been re- 

 ceived from Woods Hole, Massachusetts, through ]\Ir. George 

 Gray; others were taken at Ann Arbor, jMichigan. 



Apiis aequalis Packard. — Hyannis, Nebraska, August, 1903 ; 

 three specimens. 



