184. Mr. Albert Miiller on the dispersal 
sought in the circumstance of their being thus far more 
likely to escape notice, than if they were deposited on 
the unsullied surface of freshly fallen snow. But that 
such falls must occur, is shown by the fact of the fly 
found in a hail-stone, which I have already alluded to. 
So far, I have only stated the evidence afforded by 
insects deposited in the plains. 
Ascending now the mountains, we ought to expect to 
find similar wrecks of insect transports, if the theory 
that atmospheric involuntary locomotion is a powerful 
agency of dispersal, be worth holding. 
And so we do, here are the proofs tabulated :— 
PYRENEES. 
MALADETTA. 
Observed on the snowy dome of the glacier, at a height of about 11,000 
feet, great numbers of a Chrysopa, both flying and crawling on the snow. 
July. 
Glacier of the Vignemale, at a nearly equal height, obtained a fine series 
of Ichneumon antennatorius, Grav. They were picked up at intervals of 
a few yards, alive but feeble, each one being at the bottom of a small pit 
or depression in the snow. With them, in equal abundance, a moth, pro- 
bably P. gamma. Also a few Lygeus equestris, noticed by Ramond in his 
attempt to scale the Touquerone glacier, leading up to Mont Perdu. 
(Rey. T. A. Marshall, Ent. Mo. Mag., Vol. 5, p. 170; Dec. 1868.) 
ALPS. 
Mont Brane. 
14,800 feet (Parisian). 
“Last year, one of my friends, Dr. Ordinaire, made an ascent of Mont 
Blane. On arriving at the summit, the first object that attracted his 
attention, was a Plusia gamma, kicking in the snow.” (Bruand, Catal. des 
Lepidopt. du Dépt. du Doubs, 1845, p. 83.) Ad. & Aug. Speyer say in 
reference to this observation, “ so much is certain, that only an acci- 
dent, and ascending current of air of rare steadiness and intensity, could 
have brought the creature into that inhospitable region. (Die geograph. 
Verbreit. der Schmetterlinge Deutschlands und der Schweiz.’ 2nd part, 
1862, p. 29.) 
Monte Moro. 
‘ At an elevation of about 8000 feet, in small cylindrical holes in the 
snow, in each either a small lump that looked like peat, or more frequently 
an insect, invariably either Dipterous or Ichneumonideous.”’ One insect 
found lying on the snow was still living, viz., Cryptus tarsoleucus. F. P. 
Pascoe, Proe. Ent. Soc. Lond. Vol. 3, April, 1865. Further particulars in 
my paper, Zoologist, 1866, p. 273; and discussion of the same in Trans. 
Ent. Soe. Lond., 3rd ser., vol. v., proc., p. xix.; and Dr. Imhoff’s note in 
the ‘ Zoologist’, 1866, p. 390. 
