12 BROOKLYN INSTITUTE MUSEUM. SCIENCE aULLEl'lN 2. I, 
fly into our houses and we mercilessly beat them clown ; they migrate 
to our neighborhood in spring, when bird-lovers are all expectancy 
for even the most familiar of the feathered kind, yet our equally 
fascinating, equally useful, furry little chauvc-souri is not thought 
of. He lives unto himself, earning his subsistence when most of 
the world is still, and by day he is slumbering in the woods or in the 
alders over our streams. 
5. HOARY BAT 
Lasiiiriis cinereiis (Beauvois) 
Longth 13.75 centimeters (5.40 inches). Resembles the Red Bat but is larger, 
.ind mottled with brown, buff and white, white predominating below. 
The Hoary Bat is a migratory animal, with a range extending 
well into the interior of Canada, and up the coast as far as New- 
foundland and Labrador. Largest and most beautiful of all our 
species, it is a rare mammal, both on Long Island and elsewhere. 
On Long Island it has been taken in August, September and October.* 
One October a specimen was secured by Mr. Arthur H. Helme at 
Miller Place, where the bat had crept under a driftwood plank on the 
Sound Beach. Another was captured alive at Floral Park, August 
19, 1911. 
Little is known of the life history of this species. The best 
account of its habits is that given in the "Mammals of the Adirondack 
Region," by C. Hart Merriam, who has been more fortunate than 
most naturalists in opportunities for studying it. 
It seldom comes forth from its arboreal retreats until dark, and it 
is the strongest and swiftest flyer among all our representatives of 
its family. Beyond these meager statements we can make no general- 
ization concerning it, though presumably man}' of its ways are like 
those of the Red Bat, which it most resembles. 
It was on the inorning of August 19, 1911, that Mr. Murphy 
first made the acquaintance of a living Hoary Bat. He had been 
warbler hunting near Floral Park, Long Island, since sunrise, when, 
entering a copse of dense second growth about eight o'clock, he 
presently saw a gray oblong with no projections or irregularities, 
suspended about four feet above the ground from a chestnut sprout. 
A step nearer revealed the identity of the oblong. It hung from 
*C. S. Miller. Jr., Preliminarv list ..f mammals of New York, in Bull. \. ^•. St.Ue 
Mus. VI, 18Q9, No. 29. 
