442 MR. G. S. BRADY ON 



Peltidium purpureum, White, Pop. Hist. Brit. Crust. 



On Laminaria saccharina at Roker and Cullercoats ; frequent. 

 Shetland (Rev. A. M. Norman). 



3. AiiTEUTHA 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. 



1. Aspidiscus fasciatus, Norman, Last Shetland Dredging Re- 

 port, p. 298. 



Abundant on the fronds of Laminaria saccharina at Roker, 

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



EXPLANATION OF PLATES. 



PLATE XVII. 



pseudocyclops crassiremis (male). 



Fig. 1. Animal, seen from right side, X 84. 



Fig. 2. Superior antenna of right side, X 210. 



Fig. 3. ,, ,, of left side, x 210. 



Fig. 4. Inferior antenna, X 210. 



Fig. 5. Maxilla, X 210. 



Fig. 6. Lower foot jaw, x 210. 



Fig. 7. Fifth pair of feet, x 120. 



Fig. 8. Last abdominal segments and tail, x 84. 



CYCLOPS LITTORALIS. 



Fig. 9. Superior antenna, x 210. 



Fig. 10. Inferior antenna, X 210. 



Fig. 11. Mandible, x 210. 



Fig. 12. Upper footjaw (?), x 210. 



Fig. 13. Lower footjaw, x 210. 



Fig. 14. Abdomen and tail : (a) foot of fifth pair, x 210. 



