CRUSTACEA OF NORTHUMBERLAND AND DURHAM 329 



Ceriodaphnia megalops G. O. Sars. 



1901. Ceriodaphnia megalops, Lilljeborg, I.e., p. 190, 

 pi. xxvii., figs. 11-15. 

 Abundant in the river Till at Etal, Northumberland 

 (A. M. N.) N. 



Ceriodaphnia quadrangula (O. F. Miiller). 



1901. Ceriodaphnia quadrangula, I.e., p. 193, pi. xxviii., 

 figs. 1-5. 

 Chartners Lake, Northumberland (A. M. N.) N. 



Ceriodaphnia pulchella G. O. Sars. 



1901. Ceriodaphnia pulchella, Lilljeborg, I.e., p. 198, 

 pi. xxviii., figs. 6--18. 

 Lake at Hard wick Hall, Sedgefield (A. M. N.) ; Tindale 

 Tarn (G. S. B.) N.D. 



Ceriodaphnia laticaudata P. E. Miiller. 



1901. Ceriodaphnia laticaudata, Lilljeborg, I.e., p. 208, 

 pi. xxix., figs. 8-14. 

 Lake at Wynyard Park (A. M. N.) D, 



Fam. 2.— BOSMINID^ 



Bosmina longirostris (O. F. Miiller). 



1867. Bosmina longirostris, Brady and Norman, I.e., p. 357, 



pi. xxii., fig. 4. 



1901. Bosmina longirostris, Lilljeborg, Lc., p. 226, pi. xxx., 



figs. 13-16, pi. xxxi., figs. 1-18, pi. xxxii., figs, 1-3. 



Bosminse have been taken by me in Darden and Sweethope 



Lakes, Northumberland ; also at Wynyard and Hardwiek 



Hall, Sedgefield, and moat at Raby Castle ; and I believe all 



of them to have been this species, but as it is more than forty 



years ago when they were found, and I merely have records 



and not specimens, it is possible that those from one or more 



of the Northumberland localities may belong to the following 



species (A. M. N.) N.D.' 



Bosmina obtusirostris G. O. Sars. 



1867. Bos/nijta longispina, Brady and Norman, I.e., p. 358, 

 pi. xxii., figs. I, 2. . 



