of the Fishery Board for Scotland, 277 



Candona kingsleii, Brady and Robertson. Frequent in Lochgelly and Camilla 

 Lochs. 



,, fabceformis (Fischer). Lochgelly and Raith Lake. 



,, hyalina, Brady and Robertson. Lochgelly Loch, rare. 



,, ambigua, n.s. Lochgelly Loch, not common. 

 llyocypris gibba (Ramdohr). Lochgelly and Raith Lake. 

 Limnicythere inopinata, Baird. Occurred in the three lochs. 



Candona ambigua, provisional name (PI. IV. figs. 7a-c). Shell. — Lateral 

 view somewhat similar to C. pubescens, but the straight part of trie dorsal 

 margin is more central, and the slope from each end of it towards the ex- 

 tremities of the shell more equal than in that species. The flexure of the 

 ventral margin is also more distinct. Height rather more than half the 

 length. The outline as seen from above is very compressed, much more 

 so than in C. pubescens. It is acuminate in front and narrowly rounded 

 behind. Width a third of the length. Length, -^ in. = '83 mm. ; height 

 -g^- in. Antennules.— The length of the first, second, and fourth joints 

 counting from the extremity is nearly equal, the third is about two-thirds the 

 length of the second, the fifth is about equal to the third joint. Antennos. 

 — The ultimate scarcely half the length of the penultimate joint, which is 

 about two-thirds the length of the preceding. I could not clearly make 

 out the other joints of the antennules and antennae in my dissections. 

 The figures show approximately the proportional lengths of the joiuts. 



Cladocera. 



Sida crystallina (Miiller). Raith Lake, common. 



Da/phnella brachyura (Lievin). Raith Lake, common. 



Ceriodaphnia reticulata (Jurine). Raith Lake, frequent. 



Scapholeberis mucronata (Miiller). Raith Lake, frequent. 



Simocephalus vetulus (Miiller). Raith Lake, Lochgelly Loch. 



Daphnia pulex, Linne. Raith Lake, frequent. 



Eurycereus lamellatus (Miiller). Raith Lake, Lochgelly Loch, frequent. 



Acroperus harpa, Baird. Frequent in the three lochs. 



Leydigia quadrangularis (Leydig). Lochgelly Loch, not very common. 



Lynceus tenuicaudis (G. 0. Sars). Camilla Loch, not common. 



,, quadrangularis, Miiller. Frequent in the three lochs. 



,, guttatus (G. 0. Sars). Camilla Loch. 

 Alonella nana (Baird). Raith Lake, scarce. 

 Peracantha truncata (Miiller). Lochgelly Loch, not common. 

 Pleuroxus trigonelleus (Miiller). Raith Lake, frequent. 



,, uncinatus, Baird. Raith Lake, not very common. 



,, lazvis (G. 0. Sars). Camilla Loch, not common. 



Chydorus spihazricus (Miiller). Frequent in the three lochs. 

 Polyphemus pediculus (Linne). Frequent in Raith Lake. 



3. Loch Ness, Loch Oich, and Loch Lochy. 



These lochs occupy a considerable portion of the great valley that 

 stretches across Scotland from the Moray Firth to Loch Linnhe, and they 

 constitute about two- thirds of the entire length of the Caledonian Canal, 

 the whole length of which is about 60 miles, while the combined length of 

 the three lochs is little, if anything, under 40 miles. 



For various reasons it was considered desirable that an effort should be 

 made to examine the invertebrate fauna of these lochs while the ' Garland ' 

 was proceeding through the canal on its way to and from the west coast, 

 but the stormy weather encountered by us, both going and returning, 

 formed a serious hindrance to anything like a satisfactory investigation 

 being mudc. 



