190 Proceedings of the Royal Physical Society. 



In Professor Lilljeborg's work on the Cladocera of Sweden, 

 38 genera are described ; 32 of them are represented in the 

 preceding list. The 6 not represented are as follows : — 



1. Limnosida, G. 0. Sars. 4. Bunops, E. A. Birge. 



2. Moina, W. Baird. 5. Streblocerus, G. 0. Sars. 



3. Ophryoxus, G. 0. Sars. 6. Anchistropus, G. 0. Sars. 



Three of these — Ophryoxus gracilis, G. 0. Sars, Streblocerus 

 serricaudatus (Fischer), and Anchistropus emarginatus, G. 0. 

 Sars, have been obtained in Scotland. The first was dis- 

 covered by Mr D. J. Scourfield in Loch Ness, and in a back- 

 water of the Caledonian Canal at Coiltry Lock. The second 

 I found in the Dhu Lochan — a small loch close to Loch 

 Lomond, and about two miles south of Rowardennan. The 

 third was taken by the late Dr Robertson, of Millport, in 

 1863, in the Paisley Canal (since filled up), and has occurred 

 more recently in Ireland, and at one or two places in England. 

 Moina — all three species — has been recorded from England, 

 but not from Scotland, and there does not appear to be any 

 British record for the other two. But though the genera are 

 so well represented, our list comes far short in the matter 

 of species. Lilljeborg describes about 100 species from 

 Sweden, besides numerous varieties, whereas our record 

 amounts only to 54. It is thus apparent that further research 

 is necessary, and will doubtless be rewarded. 



Suborder Branehiura. 

 Family Argulidj;, Leach, 1819. 

 Genus (1) Argulus, 0. F. Miiller, 1781. 

 1. Argulus foliaceus (Linn.). 



1785. Monoculus foliaceus, Linn., Syst. Nat., ed. x., p. 634, No. 2. 

 1850. Argulus foliaceus, Baird, Brit. Entom., p. 255, pi. xxxi. 

 figs. 1, 2. 



Habitat. — Found attached to a specimen of the Three- 

 spined Stickleback (Gasterosteus aculeatus), and also free 

 amongst Anacharis in the Union Canal, near Edinburgh, 

 by Mrs Janet Carphin, on 26th August 1895. 1 



1 Ann. Scot. Nat. Hist., No. 16, October 1895, p. 255. 



