58 Myron Harmon Swenk 
unreliably differentiated as.to make unadvisable the recognition 
of such variants by name, even though correlated with recog- 
nized life zones. In all these forms the male genitalia are essen- 
tially identical. 
Colletes armatus is an autumnal species, flying in New Eng- 
land and the North Atlantic states from August 20 to October 9. 
It seems to visit chiefly the flowers of Solidago, according to my 
abundant records, although Mr. Robertson considers it oligo- 
tropic upon Compositac, and probably has taken it upon other 
flowers. He gives its season in southern Illinois from August 
17 to October 7. In Nebraska it flies from August 5 to Septem- 
ber 22, chiefly on the goldenrods (Solidago rigida and S. mus- 
souriensis) and rosin-weed (Grindelia squarrosa). In New 
Mexico it flies from July 29 to October 2, and the types of big- 
eloviae were taken on Chrysothamnus graveolens glabrata. The 
range of the species includes practically the eastern half of the 
United States, from Maine (Waldoboro, Indiantown Island) to 
Georgia (Atlanta), west to Arizona, New Mexico, Colorado, 
and the Black Hills (Custer, Hot Springs). 
SPECIMENS EXAMINED—Arizona: Base of Humphrey’s Peak, 
1; southern Arizona, 1; Colorado: 1; Connecticut: Rockville, 1; 
Stafford, 3; Georgia: Atlanta, 3; Illinois: Carlinville, 1; Indiana: 
Elkhart, 4; Maine: Indiantown Island, 5; Waldoboro, 6; Mas- 
sachusetts: Cohasset, 1; Riverside, 1; Nebraska: Lincoln, 45; 
West Point, 12; Nebraska City, 1; Glen, 5; Broken Bow, 1; 
New Hampshire: Durham, 4; Hampton, 18; Pelham, 25; New 
Jersey: Anglesea, 1; Great Notch, 1; Lucaston, 2; New Mexico: 
Beulah, 5; Pecos, 2; Sapello canyon, 1; San Ignacio, 1; Ohio: 
Columbus, 1; Pennsylvania: Germantown, 1; Darby, 1; Lawn- 
dale, 2; Ogontz, 1; South Dakota: Custer, 6; Hot Springs, 1; 
Virginia: Falls Church, 4. 
Colletes tegularis Swenk. 
1905. Colletes tegularis Swenk, Canadian Entomologist, xxxvii, no. 8, p. 
304, 2 (August, 1905); original description. 
1906. Colletes tegularis Cockerell, Transactions of the American Entom- 
ological Society, xxxii, p. 292, 2 (October, 1906) ; recorded from 
Albuquerque, New Mexico. - 
100 
