23 



common. This species is rather local in its distribution in Scot- 

 land, besides being inconstant in its haunts. Many years ago it 

 was in great abundance in a tarn on Little Cumbrae. Although 

 the same tarn has recently been searched over and over again, this 

 species has been met with only sparingly on one or two occasions. 

 In some of the brackish ponds along the shores of Great Cumbrae 

 it has been met with plentifully in autumn, and in the same ponds 

 on the following spring not one was to be seen — not even a vestige 

 of their dead shells. This is the case occasionally with other 

 species of Ostracoda, but not so markedly as has been noticed 

 with Notodromas monachus. 



Candona albicans, Brady. 



Candona albicans, Brady. Ann. and Mag. Nat. Hist, vol. xiii., p. 61, pi. 



iv. , figs. 6-10; Trans. Tyneside Nat. F.C., vol. vi., 

 p. 107, pi. iii., figs. 6-10; Mon. Bee. Brit. Ost., 

 p. 381, pi. xxv., figs. 20-25; and pi. xxxvi., fig. 12. 



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



p. 133, pi. i., figs. 10-13. 



Moderately common in Paisley Canal and Duddingston and 

 Lochend Lochs, Edinburgh; common in Baron Loch, Mannor, 

 Peeblesshire ; very fine in Frankfield Loch; large and in beautiful 

 condition in a wet furrow of old pasture land, Kilwinning ; com- 

 mon in lochs of Lochmaben ; one only in gatherings from Skye. 



Candona lactea, Baird, 



Candona lactea, Baird. Proc. Zool. Soc. Loud., p. 255, pi. xviii., figs. 25-27. 



Brady. Mon. Pec. Brit. Ost., p. 382, pi. xxiv. , figs. 55-58. 



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



p. 134, pi. i., figs. 14-16. 



Found in Duddingston Loch, and Paisley Canal. This species 

 appears to be rather rare in Scotland. 



Candona euplectella, sp. nov. 



Found in Callum's Tarn, Bute. In tarn on Little Cumbrae. 

 In Year Loch, Blind Loch, and Broomhill Loch, Lochmaben. 



Candona compressa, Koch. 



Cypris compressa, Koch. Deutschlands Crustaceen, H. 21, pi. xvii, 

 Candona compressa, Lillj. De Crust, ex ord. trib., p. 129, tab. xxvi,, figs. 1-3. 



