PLATE VL 



Fifi 



1, 2, Bairdia subdeltoidea, p. 52. 



1 a. Perfect, right valve upwards . . . x 25 



1 b. Perfect, dorsal aspect . . . . X 25 



2. Perfect, right valve upwards. (Showing denticulatious at the 



anterior and posterior margins.) . . . x 25 



Copenhagen Fields, 

 London. 



3. Cytheridea perforata, var. insignis, p. 46. 



a. Right valve, outside : imperfect 



b. Right valve, posterior aspect 



c. Right valve, dorsal aspect 



4, 6. Cythere scrobkuloplicata, p. 33 



4. Left valve, outside 

 6 a. Left valve, outside 

 6 b. Left valve, hinge-line 

 6 c. Right valve, hinge-line 

 6 d. Perfect, dorsal aspect 



5. Cythere triangularis, p. 25. 



a. Left valve, outside 



b. Left valve, dorsal view 



c. Left valve, hinge-line 



d. Perfect, anterior aspect 



e. Right valve, hinge-line 



f. Right valve, dorsal aspect 



g. Right valve, outside 



X 25 "1 



^ Copenhagen Fields 



' [ London. 

 . X 2o I 



. X 25 . 



X 25 



Copenhagen Fields 



London. 

 . X 25 



• X 25^ 



. X 25^ 



. X 25 





. X 25 

 . X 25 

 . X 25 



Copenhagen Fields, 

 London. 



. X 25 

 . X 25^ 





7, 8. Cythereis Bowerbankiana, p. 38 

 7. Left valve, outside 

 8. Left valve, outside 



X 25 1 Copenhagen Fields, 

 X 25 J London. 



9. Cythere scrobiculoplicata, var. recta, p. 34. 

 Left valve, outside 



X 25 East Woodhay, Hampsh. 



10, 11. Cytheridea Mulleri, p. 41. 

 10 a. Left valve, outside 

 10 b. Perfect, dorsal a'spect 

 11. Left valve, outside 



X 25 Woolwich. 



12. Cytheridea Midleri, var. torosa, p. 42. 

 Right valve, outside . 



X 25 Woolwich. 



' This and the subsequent figures of species from Colwell Bay were introduced among the Woolwich species under the 

 mistalie explained at p. 26. 



