of the Fishery Board for Scotland. 



135 



Cladocera. 



Latona setifera (M tiller). 

 Bosmina longirostris (Miiller). 

 Drepanothrix dentata (Euren). 

 Uyocryptus sordidus (Lievin). 

 Acroperus harpce, Baird. 

 Graptoleberis testudinarius (Fischer). 



Alona intermcdu 



Chydorus barbatus (G. S. Brady). 

 Alona costata, G. O. Sars. 

 Alona neglecta, T. Scott. 

 Alona quadrangular is (Miiller). 

 Harporhynchus falcatus, G. 0. Sars. 

 Alona rustica, T. Scott. 

 G. 0. Sars. 



Bu Water. 



The gathering from Bu Water is of interest because of the elevation of 

 the loch, which is upwards of 200 feet above the sea, and because it seems 

 to be altogether dependant on the rain for its supply of water. It might 

 have been expected that under these conditions the micro-fauna of the 

 Bu Water would have exhibited on the whole some variation from that of 

 lochs nearer sea level. Such can hardly be said to be the case, however, 

 as, with perhaps one or two exceptions, all the species identified are 

 similar to those from other lochs. No Mollusca were observed in this 

 loch. 



CRUSTACEA. 



COPEPODA. 



Cyclops strenuus, Fischer. Canthocamptus hirticomis. T. Scott. 



Cyclops serrulatus, Fischer. Attheyella crassa (G. 0. Sars). 



Cyclops fimbriatus, Fischer. Ophiocamptus sarsii, Mrazek. 



Cladocera. 



Latona setifera (Miiller). 

 Bosmina longirostris (Miiller). 

 Drepanothrix dentata (Euren). 

 Uyocryptus sordidus (Lievin). 

 Ceriodaphnia quadrangula (Miiller). 

 Eurycercus lamellatus (Miiller). 



Chydorus (?) ovalis, Kurz. 



Acroperus harp&, Baird. 

 Alonopsis elongatus, G. 0. Sars. 

 Alona neglecta, T. Scott. 

 Alona rustica, T. Scott. 

 Alona quadrangularis (Miillei ). 

 Chydorus spha&ricus (Miiller). 



No Ostracoda were observed in the gathering from Bu Water, but 

 Insect-larvae, Notonectidae, Coleoptera, Rotifera and other micro- 

 organisms were more or less common. 



Third. — Lochs on the Mainland. 



Loch of Brindister. 



Very few Mollusca or Crustacea were obtained in the gathering from 

 this loch, but the larvse of the Oxyethicra* with their curious cases, 

 Rotifera, Tardigrada, and other organisms were fairly common. The 

 common water milfoil — an aquatic plant — was also obtained in the 

 gathering. 



* George Swainson, F.L.S., has published in the British Naturalist for 1894 a 

 very interesting pager on several curious insect larvae and their 'cases.' 



