PLATE I. 



1. C)/2]ris Broivniana, p. 13. 



a. Left valve, outside 



b. Right valve, inside ... 



c. Perfect carapace, dorsal aspect 



d. Perfect carapace, anterior aspect . 



e. Part of the surface of right valve, with the lucid spots 



2. Cypris Browniana, var. titmida, p. 13. 



a. Perfect, left valve upwards 



b. Perfect, dorsal aspect . . . . 



3. Cypris gibba, p. 15. 



a. Right valve, outside ' 



b. Right valve, inside 



Old individual. 



c. Perfect, dorsal aspect . 



d. Perfect, anterior aspect 



e. Right valve, outside. Young individual 

 /. Part of the surface of a valve 



X 25^ 



X 25 j 



X 25 , Clacton. 



X 25 j 



25 1 

 25 1 



Grays. 



Gra5's. 

 Clacton. 



X 25 

 X 25 

 X 25 

 X 25 



X 25 Gamhridgeshire. 

 X 150 Grays. 



Cambridseshire. 



4. Cypris Ovum, p. 14. 



a. Right valve, outside . . . . . X 25 



b. Perfect, ventral aspect . . . . . x 25 



5 a. Candona Candida (variety with rosette-like lucid spots), p. 20. 



Right valve, inside (broken) . . . . x 25 Copford. 



5 b. Candona Candida (variety with lucid spots in a radiating form), p. 20. 



Part of inside of left valve, showing the lucid spots . . x 150 Copford. 



6. Cypi-is setigera,Tp. 12. 



a. Left; valve, outside 



b. Left valve, inside 



c. Perfect, dorsal aspect . 



d. Perfect, posterior aspect 



X 'Za 



X 25 



X 25 



Newbur 



Candona reptans, p. 16. 



a. Left valve, outside 



b. Right valve, inside 



c. Perfect, dorsal aspect . 



d. Perfect, anterior aspect 



e. Part of inside of right valve, showing the lucid spots 



Clacton. 

 Grays. 



X 12 -1 



,„ (-Recent: .Annerley. 

 X 1... J 



X 30 Grays. 



