1899 | FLOWERS AND INSECTS 37 
m os] 
ee ee 
bs] Ug | ee] = fo 
5 ooh me oo oe _ 
ES 2. Ce eee 
Plants visited by females for = 5 oo | on | Se 
Bes pollen on). Se lee les 
Me os n o ° 
y Re pects eg 
a 2 $ oH mek 
g ie on | S22 | ge 
4 | & te o a 
Mellisodes desponsa-~ - - 2 I 2 
illinoensis  - eo pinnate - 1 j|— | — I I 
agilis - - Compo sitae - 6 |— | 12} 10 | ‘22 
americana - - - - 9 2 I 3 
coloradensis” - ts : : 7 | — 6 I 7 
pennsylvanica af ee 6 bs 9 44 12 
simillima = - sh : : Gat 12 41238 
genus of bees on which it might be supposed to be inquiline. 
Then they are more abundant than would be expected of inqui- 
line bees. Mr. Ashmead’s observations confirmed my views, 
and I have never doubted their correctness since I first read an 
account of them. In Psyche, for March 1894, p. 41, he states 
that he found Z. donatus making nests in the ground and provis- 
ioning them with a honey-paste. Epeolus thus comes under the 
Same category as Prosopis and is treated the same way in the 
table. 
The cuckoo bees of the genus Nomada hold no particular 
relations to flowers except through their hosts. However, they 
Show considerable differences. NV. vincta, which is common on 
Helianthus and was taken once on Coreopsis, is, I think, an inqui- 
line of Andrena helianthi, both bees occurring at the same time, 
in the same neighborhood, and on the same flowers. 
Bee 
At least females visit exclusively 
Prosopis nelumbonis 
ha = - = 
ilinoensis - 
Epeolus helianthi 
ec 
pusillus 
Nomada vincta 
Be EOE, 
Nympheza 
Thaspium a aureum m trifoliatum - 
Umbel 
Heltaathas’ grosse- -serratus - 
QO 
° 
3 
a) 
fo} 
zg 
& 
Composit * - . 
Other fis, visited 
No. spp. by male 
4 
I ets 
5 — 
I I 
4 ae 
13 3 
2 sce 
4 — 
3 oes 
