CRUSTACEA OF NOBTHUMBERLAND AND DURHAM 393 

 EURYTE LONGICAUDA Philippi. 



1843. Euryte longicauda, Philippi, Archiv fiir Naturg., 



Jahr. 9, p. 63, pi. iii., fig. 3 a-d. 

 1S78. Thorellia bnin/iea, Boeck, Oversigt over de ved 



Norges Kyster iagttagne Copepoder, p. 26. 



1878. Thorellia bn/nnea, Brady (3), vol. i., p. 95, pi. xvi., 



figs. i-io. 



By no means a common species in our district, but on other 



parts of the British coast considerably more abundant ; 



generally on the fronds of Laminaria saccharina at or about 



low-water mark. We have notes of its capture on the Durham 



coast (exact localities not preserved) and at the roots of 



Laminari?e at Holy Island. N.D. 



Cyclops viridis Jurine. 



1878. Cyclops gigas, Brady (3), vol. i., p. 105, pi. xx., figs. 



1-16. 

 1891. Cyclops viridis, Brady (4), p. 82, pi. v., figs. 6-10. 

 1901. Cyclops viridis, Lilljeborg, Synopsis specierum hue 

 usque in Suecia observatarum generis Cyclopis, 

 Stockholm, p. 8 (separate copy), pi. i.. figs. 6-1 1. 

 Common everywhere in fresh water, som^etimes even in 

 brackish pools. N.D. 



Cyclops bicuspidatus Claus. 



1891. Cyclops Thomasi, Brady (4), p. 80, pi. vi., figs. 1-4. 



189 1. Cyclops bicuspidatus, Brady (4), p. 78, pi. v., figs. 1-5. 



1 90 1. Cyclops bicuspidatus, Lilljeborg, loc. cit., p. 11, 



pi. i., figs. 12-17, Pl- i'-. fig- I- 



In a pond in Lambton Park, county Durham (A. M. N.) D. 



Cyclops vernalis S. Fischer. 



1863. Cyclops elongatus, Claus (2), p. 97, pi. xi., figs, i, 2. 



1 89 1. Cyclops elongatus, Brady (4), p. 70, pi. i., figs. 1-5. 



1 90 1. Cyclops vernalis, Lilljeborg, loc. cit., p. 17, pi. ii., 



figs. 5-7. 



A form of unfrequent occurrence, characterised by the 



presence of eighteen joints in the anterior antennae instead of 



the usual seventeen, was described by Professor Claus as a 



distinct species under the name elongatus. This is now 



