ART. 4, REVISION OF THE FAMILY THEREVIDAE—COLE. 97 
Abdomen gray pollinose, base of second segment broadly black, 
semshining; third, fourth, fifth, and sixth segments with narrow black 
basal bands, the pile on these bands brownish, the rest of the abdom- 
inal pile short and whitish. In most specimens there is a round 
black spot projecting beyond the basal black band of segments two to 
six. Genitalia largely blackish, with short yellow pile and a yellow 
circlet of bristles. Wings often yellowish; cell M—3 closed or narrowly 
open. 
Type locality.—Northern Wisconsin. 
Type.—A male, in the Museum of Comparative Zoology at 
Cambridge. 
Distribution.—The distribution according to 33 males and 19 
females is: 
Canada: Truro, Nova Scotia, July 4 (R. Matheson), [Cole]; 
St. Johns, Quebec, May 10 [Kans. U.]; Aweme, Manitoba, July 9 
(Criddle), [A. N.S. P.]; Coulonge, Quebec, July 28 (J. L. Beaulne); 
Landraie, Quebec, June 20 (J. L. Beaulne), [both Canad. coll.]; Ridg- 
way, Fort Erie and Kearney, Ontario, June 1 to July 20 (M.C. Van 
Duzee), [Van Duzee]. 
Maine: Norway (S. J. Smith), [M. C. Z.]. 
Connecticut: No other data (Loew), [M. C. Z.]. 
New Hampshire: White Mountains (Scudder), [M. C. Z.]; Bretton 
Woods, June 30 (M. C. Van Duzee), [Van Duzee]. 
New York: North Elba, July [Amer. Mus.]; Essex County, August 
(F. M. Jones), [Harrisb. coll.]; Lancaster, May 3 to June 28 (M. C. 
Van Duzee), [Van Duzee]. 
Pennsylvania: [nterlino, July 3, and Harrisburg, June 26 [Harrisb. 
coll.]. 
District of Columbia: No data (Loew), [M. C. Z.]. 
Virginia: Near Plummer Island, June 2 (McAtee), [Biol. Surv.]. 
Maryland: Plummer Island, May 30 (R. C. Shannon), [Shannon]. 
Ohio: Medina, May 24 (J. S. Hine), [Hine]. 
Michigan: ‘Mich.” (Wheeler), [Amer. Mus.]; Agr. College, July 12 
to 31 [Cornell]. 
Wisconsin: Cranmoor, August 5 (Hardenburg), [Harrisb. coll.]. 
Minnesota: Beltrami County, August 2 to 9; Chicago County, 
July 16; Ramsey County; Olmsted County, June 23 {all Minn. U.]. 
THEREVA CINERASCENS, new species. 
Female.—Length 9.5 mm. A black, gray pollinose species, closely 
resembling the female of candidata Loew. Frons on upper three- 
fourths pale brownish pollinose, with short black pile, the lower fourth 
of frons and face silvery white pollinose and white pilose. Occiput 
white pollinose and pilose, the pile on upper part yellowish. Anten- 
