Deronectes depressus, Fab., and elegans, Panzer. 303 
breck L. being the only other loch in the list which gave a 
like result. 
Seeing that D. depressus is a northern species, I certainly 
expected to find it at higher altitudes than D. elegans, and 
yet, whereas the latter occurred in several lochs above the 
1000-foot line, usually with the true “ Arctic” species 
D. griseo-striatus, the former was in no loch above this 
level—in fact, excepting L. Dungeon, which is about 1000 
feet above the sea, all the other lochs in which it occurred are 
at a much lower altitude. 
The habits of the two species seem to be identical. In 
some places the beetles occur in shallow water at the side, so 
that they can be caught without one having to take off shoes 
and stockings, while in other places the only way to get them 
is to strip and go in almost to the waist. In one part of 
L. Doon, for instance, I got a few specimens in about 2 feet 
of water, but none closer in, whereas in another part I failed 
to get any until [ scraped about in the shallowest places. In 
Loch Dungeon I caught a single specimen in the shallows, 
and then found them in abundance in a place where the gravel 
suddenly sloped downwards into deep weedy water. In Loch 
Narroch I got nothing until I stripped and went in, and then 
I found plenty of specimens in 3 to 4 feet of water. Again, 
in Loch Ken, wading to the knees enabled me to obtain a 
dozen and more specimens within five minutes, 
Possibly, of course, the beetles vary their depth at different 
times, and the same placeina loch might yield quite different 
results at different hours or on different days; but I have not 
yet investigated this point, and am merely recounting my 
experiences in obtaining my material. 
With regard to the Britannic distribution of the two 
species, I have already mentioned that apparently only 
D. depressus occurs in Ireland, and I have in my collection 
or have seen specimens from Antrim, Fermanagh, Cavan, 
Sligo, and Cork West. In Britain the only counties in 
which I have so far taken this species are Cumberland, 
Selkirk, Dumfries, Kirkcudbright, Ayr, and perhaps Dum- 
barton (Loch Lomond) ; but in the latter case I have only a 
female specimen, and, as I have said, I do not feel quite 
certain as to the species in the absence of a male. 
Of the thirty-two lochs examined in which one or other of 
the two species occurred, depressus was only found in eleven, 
and the following is a list of these :— 
Talkin Tarn. Cumberland. 
St. Mary’s Loch. | «7,-., 
L. of the Lowes. | Selkirk. 
