(Reprinted from the ‘Transactions of the Edinburgh Field Naturalists’ 
and Microscopical Society,’ Session 1902-1903.) 
SOME OBSERVATIONS ON THE DISTRIBUTION 
OF THE SMALLER CRUSTACEA. 
By THOMAS SCOTT, LL.D., F.L.S., Honorary Memper. 
THE distribution of the Crustacea, and especially of the 
smaller species, has in recent years been attracting more 
attention than formerly. That it should do so is not 
only not surprising, but one is rather inclined to wonder 
why these minute crustaceans have been so long and go 
much neglected. For whether we regard their extremely 
varied and often beautiful forms, or their interesting, and 
in many cases strange, life-histories, they are found to con- 
stitute one of the most fascinating studies that can engage 
the attention of the zoologist. 
In the following observations on the distribution of the 
‘smaller species of crustacea, I shall for the most part confine 
my remarks to those that have been observed in connection 
with the investigations which have for a considerable number 
of years been carried on under the direction of the Scottish 
Fishery Board. And, /irst, I propose to notice, briefly, the 
influence of the seasons on the distribution of the smaller 
crustacean species: this is sometimes more easily observed in 
regard to fresh-water forms than amongst those that live in 
the open sea. Second, reference will be made to the occur- 
