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NOTES ON SOME SCOTTISH ENTOMOSTRACA. 
By Thomas Scott, F.L.S. 
(Naturalist to the Fishery Board for Scotland.) 
P^HE following notes refer to a few species of Entomostraca^ 
X which are as yet rare in Scottish waters.^ 
Eurytemora (Temorella) hirundo, Giesbrecht. This 
Copepod was taken some time ago with the tow-net in the upper 
waters of the Forth, i.e. between Kincardine-on-Forth and Alloa. 
It was comparatively common, and both male and female were 
obtained, — many of the latter with large ova-sacs. It somewhat 
resembles Termor a longicaudata^ Lubbock, — a species common 
all round our shores, — but the abdomen and caudal stylets are 
much more slender than in that species, and the serration of the 
terminal spines of the swimming feet is so fine that it requires a 
high power of the microscope to see the serratures distinctly, 
whereas the serratures of the terminal spines of the swimming feet 
of Temora longicaudata are coarse and easily made out even with 
a hand lens. Eurytemora has not been observed before in Scot- 
land. Its usual habitat seems to be the brackish water of estuaries 
and the mouths of rivers. It was first made known to science 
by Giesbrecht, who discovered it in Kiel inlet, where the conditions 
appear to be somewhat similar to the upper reaches of the Forth. 
It is rather singular that though comparatively common in the 
Forth when first observed, yet, v/hen tow-netting over the same 
area later on, Eurytemora was of a very rare occurrence. 
Diaptomus serricornis, Lilljeborg. This species was 
moderately common among some tow-net material from Loch 
Mullach Corrie (Maol a Choire) in the district of Assynt, Suther- 
landshire. The material was collected by W. S. Caine, Esq., 
ex-M.P., who was making an examination of this and other 
Sutherlandshire lochs, and forwarded to me for examination. The 
material contained a considerable number of Copepoda, including 
this rare Diaptomus, and a species of Daphnia, to be presently 
referred to. Failing to identify the Diaptomus as belonging to 
^ For further information on the Entomosiraca of Scottish inland waters, see 
Ninth Annual Report of the Fishery Board for Scotland, part iii. (1891). 
