19 



In Mugdock Loch, near Milngavie. Oct. 1 . 



In a brackish pond, No. 4, Cumbrae. 



Iu Blae Loch. May 30. 



In Lewis and Skye. July 31. 



Cypris lmvib, Mutter. 



Cypris Ice vis, Miiller. Entom., p. 52. Brady. Mon. Bee. Brit. Ost., p. 374. 



Brady, Crosskey, and Robertson. Mon. Post-Ur. Ent., p. 126. 



pantherina, Fisher. Ueber das genus Cypris, p. 163. 



ovum, Lillj. De Crust., p. 113. 



Jones. Hon. Ter. Ent., p. 14. 



Cjipria ovum, Zenker. Anat.-Sys. Stud., p. 70. 



Common everywhere in summer and winter. Some years ago 

 it was in great abundance in a hothouse tank containing the 

 Victoria Lily in the Botanic Gardens, Glasgow. The creatures 

 had perforated the broad leaves of the plant like a sieve, and 

 had laid their eggs to the number of 3 to 4 in each perforation. 

 The eggs were of a transparent greyish colour, and in their advanced 

 stage showed the shell well formed. The heat of the water in the 

 tank ranged about TO 3 Fahr. Also abundant in a gathering taken 

 under the ice in a tarn on Craigengower Farm, Cumbrae, in the 

 month of January. 



No other species that I know of in this country is occasionally 

 found in such numbers. In a roadside pond thickly matted with 

 weeds, at Glen-Helen, Isle of Man, in a few minutes' gathering I 

 had more than filled a half-ounce phial of this species alone, 

 and a similar crathering was obtained in a tarn on the south-east 

 end of Bute. Although these creatures may be found abundantly 

 at one time, yet at another they may be comparatively rare in the 

 same pond. 



Cypris ovum, Jurine. 



Cypris ovum, Brady. Mon. Bee. Brit. Ost., p. 373. 



Brady, Crosskey, and Robertson. Mon. Post-ter. Entom., p. 155. 



Monoculus ovum. Jurine. Hist, des Monocles, p. 179. 



This species appears to be more common in England than in the 

 west of Scotland. It is apt to be mistaken for C. he vis, but when 

 looked at from above is seen to be more elliptical and less tumid. 

 It is met with in lochs, ponds, and canals, moderately common; in 

 a group of marsh ponds on the west side of Houston (Crosslees) 

 Railway Station; and in Duddingston Loch, Edinburgh. 



