32 Myron Harmon Swenk 
I have examined two females from Grand Rapids, Michigan, la- 
beled “11-19-1889,” a female from Durham, New Hampshire, 
taken October 5, 1849, on Aster, and a male taken at German- 
town, New Jersey, “11-1-1905,” by Mr. H. S. Harbeck. These 
autumnal specimens are, however, rare, and are to be viewed as 
abnormally accelerated individuals rather than-indicating a fall 
brood of the species. 
The biology of this Colletes has been very well worked out by: 
Dr. J. B. Smith in his papers in the Journal of the New York En- 
tomological Society, so that any observations by the writer would 
be largely repetition. The majority of our Colletes species prob- 
ably conform to the general life history there described, though 
probably few dig so deep as twenty-four to forty inches. Indeed, 
Mr. Viereck has sent me specimens of C. aestivalis Patton taken 
by Dr. H. C. McCook and himself at Devon, Pennsylvania, which 
were only about four inches below the surface of the field. In 
Nebraska the nests of inaequalis are like those observed by Dr. 
Smith. The identification of his specimens as C. compacta was 
of course an error, as the latter is a strictly fall species ; but to re- 
move all question I have examined specimens collected by Dr. 
Smith in his investigations, and find them to be C. inaequalis, 
“as anticipated. oe 
SPECIMENS EXAMINED—Connecticut: New Haven, 1; District 
of Columbia: Washington, 2; Illinois: Carlinville, 2; Indiana: 
Elkhart, 7; Kansas: Baldwin, 48; Maine: Waldoboro, 1; Mich- 
igan: Ann Arbor, 2; Grand Rapids, 2; Agricultural College, 2; 
Nebraska: Lincoln, 80; South Bend, 8; Ashland, 4; Cedar Bluffs, 
1; Omaha, 2; West Point, 15; Neligh, 3; Halsey, 2; Sioux county, 
2; New Hampshire: Durham, 16; Webster, 5; Hanover, 16; New 
Jersey: Riverton, 7; Colingswood, 2; Clementon, 6; Germantown, 
1; Hainesport, 1; Westville, 1; Chester, 2; Prospertown, 1; Lah- 
away, 19; Ohio: Columbus, 44; Oklahoma: Ardmore, 2; Penn- 
sylvania: Philadelphia, 1; Texas: Wolfe City, 3; Virginia: East 
Falls Church, 3; Great Falls, 7. 
Colletes inaequalis ferrugineus n. subsp. 
© g. Agreeing in all structural characters with typical inaequalis, but 
entire pubescence, except for the black thoracic hairs, deep rusty fulvous 
instead of dull gray or pale ochreous gray. 
74 
