SA.LT-MAESHES Oj? NOKTHUMBEELAND AND DURHAM. 135 



I have taken it in great numbers at Hylton Dene ; also at Hart- 

 lepool, Seaton Sluice, Alnmouth, and Burgh Marsh, near Car- 

 lisle. Mr. Norman finds it in a similar situation in the Isle of 

 Cumbrae. I have only once noticed it in the open sea, and then 

 only one or two specimens were taken ; this was on the coast 

 near Sunderland Docks. 



Genus. DIAS, Lilljeborg. 



DiAS LONGiREMis, Lilljehorg. 



Dias longiremis, Brady. Nat. Hist. Trans. North, and Durham, 

 Vol. I., p. 35, Plate I., fig. 14; and Plate II., figs. 11-18. 



D. longiremis has occurred in brackish water at Alnmouth, and 

 at Burgh Marsh Cumberland ; but is more abundant and of much 

 finer growth in the open sea. 



EXPLANATION OF THE PLATES. 

 PLATE lY. 



Cyclops Lubbockii. 



Fig. 1. Upper antenna of female, x 210. 



Fig. 2. „ ,, male, x 210 



Fig. 3. Lower antenna, x 210. 



Fig. 4. Upper foot-jaw, x 210. 



Fig. 5. Lower foot-jaw, 400. 



Fig. 6. Fifth foot of male, x 400. 



Fig. Grt. Appendage of first abdominal segment, x 400. 



Fig. 7. Upper abdominal segments of male, x 210. 



Fig. 8. Tail, x 210. 



Cyclops jEQuoinous. 



Fig. i). Upper antenna of female, x 210. 

 Fig. 10. Lower antenna, x 210. 

 Fig. 11. Mandible, x 210. 



