1872.) 273 
Note on the variation of Triphena orbono, S’c.—My breeding cage is now yielding 
me a fine series of Triphena orbona from eggs laid by the black and red varieties 
(Curtisii, Newm.). Tue proportion of dark black, reddish, and light forms is 
about equal. 
I have bred some remarkably fine Demas coryli, Ceropacha flavicornis, Trachea 
piniperda, Halias prasinana, &c.—G. Norman, Cluny Hill, Forres, N.B.: 21st 
February, 1872. 
On a Trichopterous insect (Limnophilus) from the Falkland Islands.—So little 
is known of the natural productions of these distant British possessions, that any 
note concerning them, however meagre it may be, can scarcely fail to be of interest 5 
and the present one I take to be of more than passing value, inasmach as it throws 
light upon a very remarkable point in the geographical distribution of insects. 
Some little time since, my friend Mr. Bates received a small consignment, 
chiefly of Coleoptera (in spirits), from those Islands; and among them were two 
specimens of a Caddis-fly. Both are females, and this circumstance (combined 
with their inferior condition) renders it unadvisable that a description should be 
drawn up, or name given, without information regarding the other sex. They 
appear to represent a species of Limnophilide of about the size of the Kuropean 
vittatus, centralis, ignavus, or striola, and much resemble the two latter in facies. 
I have several times called attention to the apparently total absence of the 
family Limnophilide (so abundant in the temperate regions of the north) in the 
Southern Hemisphere; and it was not until I had become acquainted with Gay’s 
work on Chili, and was informed by Herr Brauer that the Vienna Museum possessed 
insects of this family from that country, that I fully realised the correctness of my 
formerly expressed suspicions as to the quarter in which its representatives might 
be sought for with a probability uf success. 
These two small insects, therefore, furnish another proof of the affinity of the 
insect-fauna of the extreme southern parts of South America with that of Hurope, 
Northern Asia, and extra-tropical North America. The port of Stanley, Falkland 
Islands, has of late years become an important place of call and harbour of refuge 
for mercantile shipping, and it will thus probably be difficult to decide, in some 
cases, as to which animals and plants are really indigenous and which introduced. 
But a Caddis-fly occurring there cannot be other than truly indigenous.—R. 
Mc Lacutan, Lewisham, 29th January, 1872. 
Eristalis tenax attracted by painted flowers.—In the afternoon of the 27th 
August, 1871 (a bright, sunny day), a specimen of BPristalis tenae entered my 
sitting room through the open window, and, flying in a straight line towards one of 
the flower-bunches represented on the wall-paper, hovered in front of, and at last 
settled on one of the painted red flowers. Very soon an angry buzz proclaimed 
that the fly had discovered its mistake ; but, not content with having been deceived 
once, it abruptly left the spot and successively visited several other bunches, 
darting very noisily and rapidly from one to the other. After having watched its 
proceedings for some minutes, I secured it. Of course the well-developed eyes of 
this Dipteron betoken great visual power; but it is not often that a lucky accident 
helps us to prove that sight alone directs it to flowers, because, in the case of 
