35G I^ri'. 1{. Giiniey on certain 



The first pair of antennru of the female are longer and 

 more slender than in C. laticunduta, and the postabdomen 

 is not so broad. The male is readily distinguished by the 

 protuberance of the rostral region of the head. 



So far as I am aware, C. seiosa, which was first described 

 in 1890 from specimens taken in the neighbourhood of 

 Moscow, has since that time only been recorded from 

 Sweden and from PlJin, in Holstein. Prof, Lilljeborg states 

 tliat it is very rare in Sweden, though widely distributed, 

 being found in places with rich vegetation, jjarticnlHrly 

 Lemna, in company with C. laiicaudata and C. rotunda. 

 Tlie latter has never been found in this country since 1850, 

 when Baird described it in his ' Natural History of British 

 Entomostraca,' and it is very probable that his description 

 refers to C. laticaudata. 



3. Kurzia latissima, Kurz. 



This species was found for the first time on Aug. 26, 

 and was common on that day in a small patch of Hypnum, 

 which reached to the surface of the water. This patch was 

 little more than a yard in diameter, and the Kurzia were 

 almost confined to it, since none were found in the sur- 

 rounding marsh. On subsequent days occasional specimens 

 were taken in the neighbourhood of this spot, but the species 

 ra])idly decreased in nnmbers, and only two individuals were 

 found on Oct. 7 in spite of assiduous search. 



Kurzia latissima is a rare species, but has an extremely 

 wide range, being recorded from Sweden, Bohemia, Russia, 

 Switzerland, Brandenburg, Central AsJa, United States, 

 Paraguay, Brazil, and Argentina. It is readily distin- 

 guishable by its broad outline and its very narrow post- 

 alxlomen. The ephippial area is not marked off from the 

 rest of the shell by a " line of weakness,^' but is dark 

 brown in colour and marked with fine brown dots. The 

 male differs little from the female cither in shape of shell or 

 of postabdomen. 



COPEPODA. 



4. Nitocra simpleA-, Schmeil. (Fig. 2.) 



Syn. N. imilleri, Van Douwe, Zool. Anz. x;cviii. 1905, p. 43i. 



Nitocra hibernica (Brady) is widely distributed in the 

 Norfolk Broads, both in those which are quite fresh and 

 also in the rather brackish waters of the llickling region; 

 and A'^. spinipes, Boeck, is also found, though rarely, in the 



