58 
Psyche 
[March 
of Europe, Anthemoessa abrupta to A. bomboides, Clisodon ier- 
minalis to Anthophora furcata of Europe, if not the same, Ame- 
gilla walshii to the south-western A . smithii, and Emphoropsis 
floridana to southern and western species. These are the most 
heterogeneous. Geographically they avoid competition with 
95.58% of the species mentioned in 3. 
Heterotropy. — Some writers have attributed what they cal! 
“oligotrophy,” meaning few or exclusive visits, to limited tongue 
length and synchronism. The male, with a shorter tongue and 
a flight shorter by 30 days, they would expect to be more limited 
than the female. There are fewer flowers in the 51 days of the 
male than in the 81 days of the female. But the male occurs on 
26 flowers and the female on 17. The female is alone 33 days, 
Jn 27 - J1 29. . Of 250 native July flowers, 99, 39.6%, begin to 
bloom, so that the female might be expected on a good many 
flowers on which the male does not occur. But only 5 flowers are 
visited by the female alone, while 14 are visited by the male 
alone. The experimental augurs, who assume the simplicity of 
reactions, may undertake to account for this. 
Flower visits (31). — 9 collecting pollen (6) — Ebenaceae 
Diospyros virginiana; Libia tae: Scutellaria versicolor ; Liliaceae 
Polygonatum commutaium ; Rosaceae; Rosa humilis , setigera; 
Scrophulariaceae : Penstemon Icevigatus. 
$ s. (11). — Asclepias purpurascens ; Convolvulus sepium ; 
Dianther a americana ; Fraser a carolmensis; Glechoma hederacea. 
Monardabradburiana, Teucrium canadense; Hydrophyllum virgin- 
icum ; Mertensia virginica; Rubus villosus; Trifolium pratense. 
c? s. (26:14). — With female: A. pur.; D. amer.; D. vir.; F 
car.; G. hed., M. brad., S. ver.; H. vir.; M. vir.; P. hev.; P 
com.; T. prat. Alone : Aesculus hippocastanum ; Asclepias sy- 
riaca ; Blephilia ciliata, Leonurus card.iaca, Stachys palustris ; Cor- 
nus amomum ; Delphinium tricorne ; Gillenia stipulacea ; Iris hax- 
agona ; Melilotus alba, Trifolium repens ; Pastinaca sativa; Pent- 
stemon pubescens; Triosteum perfoliatum. 
Oligotrophy . — This bee is an oligotrope of Hb and Ma. It 
shows 80.6% under Hb, 64.5 under Ma and 54.8 under red. 
Of the female pollen visits all are under Ma and 50% under red. 
Of the female nectar visits, 54 . 5 are under Ma and 63 . 6 under 
