JULY 
231 
that the elytra are half orange and half blacky or very deep 
blue. As in this case^ they are deeply furrowed^ and the 
hind wings are smoky black ( Lycus Terminalis J. 
C. — As I was roaming on the bank of the river yester- 
day^ near the bridge, I caught a large black Hemerobius, 
the wings banded and spotted with white f Hermes ? ) 
Great numbers of Dragon-flies were flying over the water^ 
many of them in coitu, in the form of a circle^ having a very 
singular appearance. Towards evenings I noticed several 
Day-flies (Ephemera)^ dancing in the air above the river. 
I observed that they alternately fluttered perpendicularly 
upwards for about ten feet, and then sunk down with 
closed erect wings ; the anal bristles held perpendicularly 
and diverging : then they would flutter up and sink 
again ; continuing these motions over one spot^ till I left 
them. 
F, — The Brush-footed Bee (Megachile Willughbiella ) and 
the Green and crimson Elater^ ( Elater Metallicus ? J both 
natives of Newfoundland^, I have observed here lately. — - 
There are not nearly so many species of insects common to 
that country and this^ as I should have expected from their 
proximity. It is stated by Linnaeus^ if I mistake not^ that 
twelve degrees of latitude make almost a total change in the 
insect species ; but probably much difference is also caused 
by the situation of a country : for instance, between the coasts 
of an island, as Newfoundland, and an inland region, as this 
part of Canada. 
C. — A lad gave me, yesterday, a Water-fly of very large 
dimensions, measuring about three inches and three-fourths 
in spread of wing. It is of a dusky colour, and the nervures 
of the wings are of the same ; its claims to notice are only 
its enormous size, as compared with other species of the 
genus, for it has no beauty. It is Vteronarcys Regalis, 
