1 * s ^ ' ' 1 1 1^: 
TABLES FOR THK SEBARA'riOX OF SOME BEES OF THECEXERA 
COELIOXVS AXI) COLLETES. 
HV T. D. A. COCKliRKI.L, BOULDER, COLORADO. 
-\merican .Vpidology is greatly indebted to Mr. E. T. Cre.sson for the care- 
ful description of some 540 new species of bees, this count excluding a few which 
are now known not to be valid, but including the species of Central .America and 
the West Indies. There is, however, one difficulty in using Mr. Cresson’s work, 
and that arises from the absence of tables; in some of the more difficult genera 
this becomes so serious that the worker is at times discouraged. Two or three 
weeks work would provide us with tables for the separation of all the Cressonian 
bees; in fact, I presume that they could be made in less time than that, but 
nobody has seemed willing to undertake the task. When recently spending a 
few days in Philadelphia I took occasion to make tables of Ant/iophora, Colletes, 
(males) and Coelioxys ( females), and the two latter are herewith presented. 
Some non-Cressonian species which I found in the collection at the Philadelphia 
■Academy are included; particularlv Mr. Yiereck’s Colletes from Beulah, X. M., 
which have never been tabulated. 
Colletes Latreille 
Pubescence of thorax above deep orange ferruginous i 
Pubescence of thorax not brightly colored; males only tabulated . 2 
1. Large; abdomen shining, without definite bands . . l/iomeiea Smith. 
Small; length about lomm.; abdomen well banded . azteea Cr. 
2. .Malar space exceedingly long, at least twice as long as broad; pubes- 
cence above strongly ochraceous; legs dark red ( Mass. ) vatuia Cr. 
Malar space not exceedingly long, but as long as broad, at least, or 
almost so (hardly so in the M. X. ^‘■consors” ) 3 
Malar space short, obviously broader than long 7 
3. The abundant hair of face clear white 4 
Hair of face ochery or greyish-white; thorax above with some or many 
long plumose fuscous hairs; size larger than in the group following: 
flagellum all dark 5 
Hair of face and thorax above strongly yellowish or fulvous ... 6 
