Land, Fresh- Water, and Marine Crustacea. 189 



in the seaward part of the estuary. The Podon polyphemoides 

 recorded in Part III. of the Ninth Annual Report of the 

 Fishery Board for Scotland, p. 308 (1891), is probably this 

 species, as no Forth specimens of P. polyphemoides are now 

 in my collection. 



Genus (31) Evadne, S. Loven, 1836. 



53. Evadne Nordmanni, Loven. 



1836. Evadne nordmanni, Loven, K. Wetensk.-Akad. Handl., 1835, 

 p. 1, pis. i. and ii. figs. 1-16. 



Hahitat. — Firth of Forth, usually moderately common. 



Tribe Haplopoda, G. 0. Sars. 

 Family Leptodorid^g, Lilljeborg. 

 Genus (32) Leptodora, Lilljeborg, 1861. 

 54. Leptodora Kindtii (Focke). 



1844. Polyphemus kindtii, Focke, Sonntagslilatt. der Weser-Zeitung, '/ 

 No. 34, p. 6. / 



1861. Leptodora hyalina, Lillj., Ofversigt af K. Vet. -Akad. Forhandl.. 

 1860, No. 5, p. 265, taf. vii. figs. 1-22. 



Habitat — Loch Leven, June 1890, frequent in the open 

 water; common on 3rd September 1897, but no specimens 

 were obtained in December of the same year, nor in the 

 months of March and June of 1898. A few specimens were 

 captured in September 1897 in Loch Katrine, but none in 

 November; in 1898 none were taken in March, while in 

 June, though none were observed at the upper end of the 

 loch, the species was moderately frequent at the lower end. 

 The only other lake within the limits of the district from 

 which I have notes of Leptodora is Loch Achray; it was 

 found sparingly here on 10th September 1897, but no 

 specimens were observed when the loch was visited in 

 November ; neither were any specimens observed when the 

 loch was examined on the 17th of March and the 28th of 

 June 1898. 



