236 REV. F. A. WALKER, D.D.,. F.L.S., ETC., 
tion went, were decidedly scarce, being confined to thrée or 
four specimens, taken at Thingvellir. The green-flowering 
Angelica Islandica, cultivated for culinary purposes in rows 
along the garden borders m and around Reykjavik serves 
asa great attraction to various flies, as Calliphora erythro- 
cephala, Musca domestica, and several more, and its flowers 
are quite blackened by the number of its visitors on a hot 
day. Possibly the reason why Diptera are to be found na 
higher latitude than moths extend to is that they are 
hardier, and can better shelter themselves from inclement 
weather, under stones, as I observed their taking refuge in 
this way on the hill slopes at Saudarkrok, and also that the 
absence of flowers does not affect them similarly, as they 
settle with equal readiness and thrive on the heads or refuse 
of fish that strew the shores everywhere. The inhabitants 
of Reykatjord attributed the absence of moths to the day 
not being a sunny one, and stated that there had been 
several moths. There was no evidence whatever to show 
that the moths they referred to were not Tortrices and 
Crambidee which are to be found, as at Isafjord, at a point 
where the range of geometride would seem almost to cease. 
The showiest fly in Iceland, but not over easy to catch, is 
Sarcophaga mortuorum with pear-shaped body of as brilliant 
blue or green, as Musca ceesar, and fully as large as Calliphora 
erythrocephala. Though widely distributed, it is not par- 
ticularly plentiful, flles with a loud buzz and considerable 
vehemence, so that many specimens taken are found to have 
their wings battered. [ noted at once that it differed from 
any fly I had seen on the wing before. The orange pubes- 
cence of Scatophaga stercoraria is frequently very brilliant, 
but this is probably, however, mere local variation. 
OLASSEN 0G POVELSEN. 
. Tipula maxima alis hyalinis, dilute fusca, maculis alarum nigris, pedi- 
bus longissimis (Tipula hortorum Linnei). 
. Tipula lutea alis albis in sedendo erectis. 
. Tipula culiciformis plumosa Linnei. Tipula nigra subvirescens alis 
hyalinis non-punctatis. 
. Tipula nigra subhirta alis hyalinis, pedibus ferrugineis. 
. Tipula nigra glabra alis nigricantibus. Tipula Marci. 
. Tipula alis glaucis, puncto marginali corporeque atro, pedibus rufis. 
a 
DO Ww bo 
It will be observed from the foregoing list that two, if not 
more, distinct tribes of Diptera are included under the one 
generic name of Tipula. What are now termed Culex 
pipiens and Bibio Marci reckoned along with Tipula hor- 
torum, in other words. 
