394 CRUSTACEA OP NORTHUMBERLAND AND DURHAM 



generally considered as an abnormality, a variation of C. 

 vernalis. Professor Lilljeborg, in his definition of C. vernalis, 

 says "Antennae primi paris . . . articulis 17, rarissime 18 

 compositre." Our only record is for the elongatus variety. 

 Pools near Broomley Lough (A. M. N.) N. 



Cyclops vicinus Uljanin. 



1891. Cyclops vicinvs, Brady (4), p. 77, pi. i., figs. 6-9. 



1901. Cyclops vicim/s, Lilljeborg, loc. cif., p. 26, pi. ii., 



figs. 16-19. 



Our local records are Bolam Lake and Paston Tarn 



(G. S. B.); Broomley Lake and Fallowlees Lake (A. M. N.) 



N. 

 Cyclops strenuus S. Fischer, 



1878. Cyclops streniats, 'Qva.dy {t,), vol. i., p. 104, pi. xix., 

 figs. 1-7. 



1891. Cyclops strenuus, idem (4), p. 73, pi. ii., figs. 1-4. 



1 89 1. Cyclops abyssoru>n, idem, ibidem, p. 73, pi. iii. 

 The form described by Sars under the specific name 

 abyssonan seems to be simply a pelagic form of C. stremnts, 

 altogether more feebly developed, and generally found at 

 considerable depths below the surface. Of C. abyssoruvi we 

 have records from Crag and Broomley Lakes (A. M. N.); 

 of the stremius form from Belsay, Plessey, Lambton Park, 

 and Seaton Carevv. N.D. 



Cyclops fuscus (Jurine). 



1878. Cyclops sigiiatus, Brady (3), vol. i., p. 100, pi. xvii., 



figs. 4-12, and (4) p. 71 (in part). 

 1901. Cyclops fuscus, Lilljeborg, loc. cif., p. 44, pi. iii., 

 figs. 12-15. 

 A common species, generally distributed in weedy ponds 

 and ditches. N.D. 



Cyclops albidus (Jurine). 



1878. Cyclops teiiuicornis, Brady (3), vol. i., p. 102, pi. xviii., 



figs. I-IO. 

 189 1. Cyclops signatus, idem (4), p. 71 (in part). 

 In the same situations as the preceding species, and equally 

 common. N.D. 



