318 



Part III. — Fifteenth Annual Report 



Oi/prinotus prasinus (Fischer). — Frequent near Langbank; Clachland 

 Point, Arran.. 



Herpetocypris reptans (Baird). — Clachland Point, Arran ; scarce. 

 Cypridopsis aculeata (G. 0. Sars). — Near Langbank ; frequent. 

 Candona Candida (Mliller). — Clachland Point, Arran. and near Lang- 

 bank. 



Candona lactea, Baird. — Near Langbank, in the brackish pools. 

 Cythere pellucida, Baird. — Near Langbank, and near Dumbarton. 

 Cythere gibbosa, Brady and Robertson. — Near Langbank ; not 

 common. 



Limnicyfhere inopinata (Baird). — Near Lachland Point, Lamlash ; 

 scarce. 



Cytheridea torosa (Jones). — Brackish water, Dumbarton ; Laugbank ; 

 Arran. 



DIVISION I. 



Description op the Lochs examined during the past year 

 (exclusive of those of Shetland). 



(1) Black Loch, near Campbeltown. 



This is a small loch among the hills to the south of the town ; it is 

 surrounded on all sides by bogland, and the water is consequently dark 

 coloured. There appeared to be an abundance of micro-organisms in the 

 water. Several interesting Crustaceans were obtained in the gathering from 

 this loch, and included such forms as Moraria Anderson-Smithi ; Cantho- 

 camptus minutus, Claus; Candona hyalina; and Alona rustica, Alona 

 rustica was first described in Part iii. of the Thirteenth Annual Report of 

 the Fishery Board, from specimens obtained in the Outer Hebrides and in 

 Shetland, and this is the only other record of its occurrence in Scotland. 

 Specimens of the pretty Sida crystallina were also observed here. The 

 total number of species of Crustacea from this loch is twenty-seven. 

 Mollusca appeared to be very scarce. 



(2) Achy-Lochy, and (3) Loch Ruan, near Campbeltown. 



These two small lochs are situated on the uplands, a short distance to 

 the north of Campbeltown ; they are comparatively near each other, but the 

 first occupies a slightly lower elevation. Part of the town of Campbeltown 

 is supplied with water from Loch Euan. The surroundings of these lochs 

 are in somewhat marked contrast to those of Black Loch. There is a 

 considerable extent of pasture land in the vicinity of Achy-Lochy and Loch 

 Ruan, and the prospect is consequently much more pleasing. It is quite 

 possible that the difference of the environment may react on the fauna of 

 the lochs. Twenty-five species of Crustacea were observed in the gather- 

 ing from Achy-Lochy, but only twelve in that from Loch Ruan. Gam- 

 marus Duebeni was obtained in Loch Ruan ; the statoblasts of Cristatella 

 muceda and of Plumatella sp. were also found in that loch, and Diatoms 

 were numerous. Nephelis octoculata was obtained in Achy-Lochy. 



(4) Loch Greenan, and (5) Loch Fad, Island of Bute. 



Both these lochs are interesting hunting-grounds for the naturalist. 

 Many rare species are to be found not only in the lochs but also around 

 their shores. Unfortunately, when visiting the lochs in April, I was 

 able to make only a partial examination of them, and, consequently, could 

 not expect to be so successful as I might otherwise have been. In the 



