1881. j 
211 ) 
lrichoptera are chiefly represented by alpine Limnophilida and lihya- 
cophilce. Perhaps the most remarkable of all is Limnophilus subjeclus , 
about the last species I expected to find : originally recorded from 
Arctic America (and extending to Maine in the United States), it has 
lately been found commonly in Finland and Scandinavia, but its most 
southerly known distribution in Europe was the south shore of the 
Baltic ; essentially a boreal species and an inhabitant of districts of 
little elevation in the north, we find it again in the high Alps at about 
bOOO feet, a striking instance of the affinity that exists between the 
insects of the north and those of the high Alps very much further 
south, and under differing physical conditions, excepting the one point 
of probably equal mean temperature. 
For greater abundance, both in forms and individuals, a lower 
elevation, warmer water, and richer shelter, are necessary. Very few 
of the species found by Professor Zeller at Bergiin (about 4550 ft., on 
the other side of the Albula Pass) were seen, and many of my captures 
were not represented amongst his. Difference of season may partially 
account for this, but the main reason is difference of altitude. On 
my journey from Churwalden I took mental notes on the probable 
capability of the localities, and the most likely of these appeared to 
be between the village of Filisur and Bergiin, a mile or two from the 
former. 
The Upper Engadine captures were as follows: — 
TRICHOPTERA* 
Phky&aneim:. 
Phryganea obsoleta (Hag.), McLach. — Not uncommon at the Statzer-See; it 
hacl been only recorded as Swiss from a specimen caught by Mr. Stainton at Maria 
in 1870, but at Zurich I found that it occurs near that city, and probably in other 
localities, the Swiss Entomologists having confounded it with Ph. varia. 
Limnophilid.®. 
Limnophilus rhombicus, L. — One ? at the streamlet between the Statzer-See 
and Lake St. Moritz. Certainly an unusual altitude for this insect : the example is 
very typical in size and colours, but the appendages (known to vary) are much more 
linear (less dilated at the base) than is usual.- L. despectus, Walk. — Two ; 
Statzer-See and Yal Bevers, beaten from Pinus cembra ( vide supra). 
Acrophylax zerberus, Brauer. — One £ at a torrent between Pontresina anti 
Samaden ; as yet this is a scarce insect. 
Asynarchus ccenosus, Curt. — The largo alpine form was generally distributed 
and common ; especially so between Pontresina and Samaden, where it was sitting 
on the “ stone posts ” mentioned in my notes in Ent. Ann., 1871, p. 15. I suspect 
the larvae do not affect torrents, but live in shallow, almost standing water, such as 
is often found by the roadsides. 
* The nomenclature used here is the same as in the Systematic Catalogue in my “Revision 
and Synopsis.” 
