62 TRANSACTIONS—PERTHSHIRE SOCIETY OF NATURAL SCIENCE. 
H, concin 7 ia^ Jeffr.j H. hispida^ L., and H. rotundata^ ]Mull.—All 
common amongst loose stones, &c. The last is perhaps the most 
abundant species in the county. 
Biilimus obscurus, Mull, Pupa umbilicata, Drap., and Clausilia 
rugosa^ Drap.—All fairly common amongst stones and moss and on 
rocks. Clausila rugosa is frequently found on the trunks of trees, 
which it climbs to a considerable height. 
Carychium 7Jiinhnum^ Mull.—Amongst moss and decaying vege¬ 
table matter in most situations at several points on the banks of the 
river.* 
B.—Bird-Life within the Banks of the Tay, from Ken more 
TO Invergowrie. 
By Col. H. M. Drummond Hay, C.M.Z.S. 
In giving a rough notion of the Bird-Life within the Tay banks, I 
shall not enter on a description of the banks themselves, though these 
have in their several sections a strong influence on the distribution and 
movements of birds on the river. This has been so ably dealt with and 
gone into in the previous paper on the flora by Dr. Buchanan White, 
that I feel it would be quite superfluous for me to make further men¬ 
tion of the subject. There are about one hundred species of land 
and water birds, that obtain their food entirely, partially, or only 
occasionally within our limits (a classifled list of which is subjoined at 
the end of this paper). These I propose to treat of, and bring before 
you in a somewhat popular form, as they have been noticed by myself 
at different times and various seasons of the year, either when boat¬ 
ing, or walking along the river-bank, and I will ask you to follow me 
as if we were now doing the same. 
Commencing first with autumn, on the verge of the departure of 
our summer birds and the arrival of our winter ones, we will take one 
of our first excursions, a short one, up the water. The nets are off^ 
the last rod fisher has put by his tackle for the season, and the fish 
have begun to ascend in good earnest to their spawning grounds. 
The streams are well occupied, and a few of the early fish have begun 
to deposit their ova. Suddenly our attention is attracted by seeing a 
plump, short-winged little bird coming down the river at racing speed. 
Taking a turn he tumbles, as it were, into the water with a splash about 
mid-stream, and disappears. After a few moments he reappears and 
hops on to a boulder close by in the stream, his white breast glistening 
* For further information regarding the Land and Freshwater Mollusca of the 
district see paper by the same author in the Proceedings, 18S2, p. 72. 
