178 THE ENTOMOLOGIST. 
45.—Same date and place. A smaller humble-bee, but other- 
wise much the same, visited Lamiwm album over 50 times, and was 
then lost. At the same spot grew abundantly Viola lutea, Ranun- 
culus (? sp.), a large umbelliferous plant and a small Stellaria, 
Polygonum bistorta, and Cerastium arvense. 
46.—July 4, 1882. Meadow at Pontresina, Engadin. A great 
many specimens of Argynnis selene frequented the meadows, and 
I noticed that they had an especial liking for settling on the 
heads of Hieracium alpinum, which is of a copper-colour, very 
much the same as the insects themselves. This may, perhaps, 
have been a case of ‘natural protection,” but the object seemed 
also to suck the nectar. I disturbed one insect settled on a 
flower of the above plant, and it went immediately to another of 
the same species. This I did eight times, and on each occasion 
the insect alighted again on Hieraciwm alpinum, avoiding the other 
species that grew abundantly around. 
47.—July 14, 1882. Meadows at Sils Maria, Engadin. To- 
day being very hot I had many opportunities of observing the 
same thing just spoken of. Hieraciwm alpinum grew plentifully, 
but mixed with a profusion of other flowers. It was frequented 
by various butterflies, such as blues, coppers, copper-coloured 
fritillaries (with, I think, several allied species), and the insects 
showed their preference for Hieracium alpinum by directly settling 
on it, although I immediately disturbed them no less than 5 or 6, 
or even 8, times. 
48.—July 16,1882. Bank at St. Moritz. A small humble-bee 
which I observed was diligently visiting both red and white 
flowers of a Trifolium (? T. hybridum), where both (apparently of 
the same species) grew intermixed, with many grades of pink 
between. It next paid one visit to Gentiana campestris, and 
flew away. 
49.—July 19, 1882. Side of Alp Nova, St. Moritz. A very 
small humble-bee was watched on a place where Lychnis rupestris 
grew very abundantly with some umbelliferous plants, Chrysan- 
themum leucanthemum, Achillea millefolium, several Hieracia, 
Helianthemum vulgaris, Centaurea scabiosa, Viola lutea, Cerastium 
arvense, and Huphorbia cyparissias in lesser abundance. The 
bee visited Thymus acinos 27 times, and was lost. 
50.—Same date and place. A similar bee visited Thymus 
acinos 10 times, and was lost. 
