194 
The Scottish Naturalist 
Invergowrie. These places are Barnhill near Perth, Strathord, Stanley, and 
Methven. There is little doubt but that the railway traffic has been instru- 
mental in the distribution of the plant, but by what method is not so clear. 
It would be interesting to know if it is spreading in a similar way in other 
parts of Scotland. Its recorded distribution is from Lanarkshire and Berwick- 
shire southwards, but it has also been reported as a naturalised plant in 
Kinross-shire. — F. Buchanan Whitjt. 
REVIEWS. 
An Illustrated Hand-Book of British Dragon Flies. By 
the Editor of " The Naturalists' Gazette." Birmingham : The Naturalists' 
Publishing Company. London : E. W. Allen. 
We have strong feelings on the subject of books of a scientific nature, how- 
ever small they may be, appearing without the name of the author on the title 
page ; and our confidence in this little book is not enhanced by the fact that 
its compiler has not cared, for reasons only known to himself, to declare his 
identity. This is a cheaply got up booklet of 98 small octavo pages, giving 
descriptions of each species, and some indication of their distribution and time 
of appearance. The author has thought it well to describe a considerable 
number of vai-ieties of each species, and to all of these he has given scientific 
names, chiefly with the authority of "mihi." Unfortunately we have no 
modern work on this most interesting group of British insects, and we 
trust that this small treatise may be the means of calling attention to the 
fact, and that it may not too long continue to be the only work on sale on 
the subject. 
The British Naturalist Catalogue of the Land and Fresh- 
water MoUusca of the British Isles, with aU the Named 
Varieties. By Theo. D. A. Cockerell (Swan Sonnenschein & Co., 
London. 8vo. 19 pages). 
This list is a reprint of articles contributed to the "British Naturalist," and has 
evidently involved much painstaking research on the part of its author. It is, 
however, difficult to understand why the list is published when the Conchological 
Society's List, of which a new and revised edition is about to be published, 
may be regarded as the standard catalogue for students in this branch. One 
point of great practical convenience seems to have been overlooked by Mr. 
Cockerell — viz. , that the generic name should be repeated for every species, 
which would at once make it available as a label list. There are a few mis- 
