494 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
and in the summer of 1913, I secured it at Orono on the shrubby 
margin of a sphagnum bog at 140 feet, and at Roque Bluff, also 
on a bog, practically at sea level, and within a few rods of the 
sea-shore. 
Exact data are of exceptional interest in this connection and 
may be given at this point. Specimens have been studied from 
the following localities and unless otherwise accredited were 
taken b}^ the writer: — Machias, Roque Bluff, Whitney ville, 
Cherryfield, Houlton, Mt. Katahdin (F. P. Briggs), Orono, 
Jackman (Harvey), and Speckled Mt. (2600-2800 ft.), Oxford 
Co., Me.; Mt. Pequawket and Mt. Washington (3100 to 5500 
ft.), N. H.; Mt. Mansfield, Killington Peak, Ascutney Mt., and 
Mt. Equinox, Vt.; and Mt. Greylock, Mass. These more 
southern mountain tops maintain a suitable boreal environment 
now cut off, like so many islands, from the main body of similar 
conditions, and the presence of this Locust upon them is a par- 
allel case to that of the White Mountain butterfly {Oeneis 
semidea) whose nearest kin are to be found in Labrador. 
This is a sluggish insect and often escapes notice among the 
vegetation of its haunts by reason of its inconspicuous green 
color. The males, however, are good leapers on occasion and 
on bright warm days become fairly active, yet both sexes may 
often be taken in the hand. If alarmed, one or two quick leaps 
place them in security in the recesses of the covert, whence they 
slowly emerge, with an air of deliberative curiosity. In the cool, 
moisture-laden atmosphere of their haunts they live, literally 
and figuratively, a quiet life. They cannot fly from place to 
place, they cannot even flutter or call to their mates. When 
clouds pass over the sun they hide away, and when it reappears 
they likewise emerge and crawl sluggishly about, basking in the 
grateful warmth. Where they are numerous, a 'watchful wait- 
ing' policy is wisest for the student in favorable weather condi- 
tions, but the sweep-net is the most effective means of discovery. 
This Locust does not seem to be associated in habits with any 
particular plant or family of plants. Scudder recorded it on the 
"close branches of the dwarf birch {Betula nana)'^ in the White 
Mountains; I have usually found it on or among some of the 
various species of Ericaceae characteristic of the bogs and moun- 
tain tops, but it is also fond of raspberry and blackberry bushes; 
