16 Mr. G. S. Brady on the, Non-'parasitic Marine Copepoda. 



3. Alteutha depressa^ Baird. 

 This species, described by Dr. Baird in his ' Natural History 

 of the British Entomostraca/ is unknown to me, and appears 

 not to have been recognized by any other author. It was 

 taken by Dr. Baird in Berwick Bay. 



Genus AsPiDiscus, Norman. 



Aspidiscus fasciatus, Norman, Last Shetland Dredging 

 Report, p. 298. 



Abundant on the fronds oi Laminaria saccharina at Roker, 

 Sunderland, and Cullercoats. Shetland [Rev. A. M. Norman). 



EXPLANATION OF THE PLATES. 



Plate IL 



Fiy. L Pseudocy clops crassiremis (male) : animal, seen from right side, 

 X 84. Fiy. 2. Superior antenna of right side, X 210. Fiy. 3. 

 Superior antenna of left side, X 210. Fiy. 4. Liferior antenna, 

 X 210. Fiy. 5. Maxilla, x 210. Fiy. 6. Lower foot-jaw, x210, 

 Fiy. 7. Fifth pair of feet, x 120. Fiy. 8. Last abdominal seg- 

 ments and tail, x 84, 



Fiy. 9. Cyclops littoralis, superior antenna, X 210. Fiy. 10. Inferior 

 antenna, X 210. Fiy. 11. Mandible, x 210. Fiy. 12. Upper 

 foot-jaw (?), X 210. 'Fiy. 13. Lower foot-jaw, x 210. Fiy. 14. 

 Abdomen and tail : a, foot of fifth pair : x 210. 



Plate III. 



Fiy. 1. Cyclops ovalis, superior antenna, X 120. Fiy. 2. Abdomen and 

 tail, X 120. 



Fiy, 3. Cychpicera lata, superior antenna, X 210. Fiq. 4. Inferior an- 

 tenna, X 210. Fiy. 5. Maxilla, X 210. Fiy. 6. Upper foot- 

 jaw, X 210. Fiy. 7. Lower foot-jaw, x 210. Fiy. 8. Abdomen 

 and tail : a, foot of fifth pair : x 120. 



Fiy. 9. Macrochiron fucicohmi, male(?), seen from right side, X 100. 

 Fiy. 10. Upper antenna of male, x 220. Fiy. 11, Upper an- 

 tenna of female, X 220. Fiq. 12. Lower antenna, X 220. 

 Fi(f. 13. Mandible, x 220. Fiy. 14. Lower foot-jaw, x 220. 

 Fiy. 15. Foot of fourth pair, x 220. Fiq. 16. Foot of fifth 

 pair (male), X 220. Fiy. 17. Foot of fifth pair (female), X 220. 

 Fiy. 18. Caudal segment and setae, x 220. 



Plate IV. 



Fiy, 1. Canthocamptus imus (female) : animal, seen from left side, X 100. 



Fiy. 2. Superior antenna, x 250. Fiy. 3. Lower foot-jaw, 



X 250. Fiy. 4. Foot of first pair, X 250. Fiy. 5. Foot of fifth 



pair, X 250. 

 Fiy. 6. Scutelliclium tisboides (female), upper antenna, X 210. Fiy. 7. 



Mandible and maxilla, x 210. Fiy. 8. Foot of first pair, x 210. 



Fiy. 9. Lower foot-jaw, x 210. Fiy. 10. Foot of fifth pair, 



X 210. 



