NOTES ON FRESHWATER ENTOMOSTRACA 173 
serrulatus, Fischer ; they are all free-swimming species, which, 
‘as I have already pointed out, are more liable to be affected 
’ by changes of temperature than those that lodge among the 
aquatic plants or in the mud at the bottom and sides of the 
loch. 
I may also mention, in concluding these remarks, that a 
short time ago, when examining a small gathering of ento- 
mostraca collected in Loch Leven in June 1890, but some- 
how overlooked till now, two rare species of Copepoda were 
obtained. One of these, called Canthocamptus Schmetlit, and 
which is frequent in the gathering, was described by Mrazek 
in 1893, and is new to Britain; the other is Caxthocamptus 
minutus, Claus, and is also an addition to the British fauna. 
My friend D. J. Scourfield of Leytonstone, Essex, tells me 
in a letter recently received from him that he obtained 
Canthocamptus minutus, Claus, last year in two different 
localities, viz. one at Wanstead Park, and another in the Isle 
of Wight; and though no record of its occurrence has yet 
been published, to him belongs the credit of its discovery in 
the British Islands. The fact of its occurrence in such widely 
distant localities as Loch Leven and the Isle of Wight is an 
indication, I think, that its distribution in our islands may 
be really more general than at present it seems to be. 
Descriptions and drawings of the two species are being pre-. 
pared for publication. 
