PLATE III. 



Fig. 



Cy there trigonula, p. 25. 



a. Perfect, right valve upwards 



b. Perfect, dorsal view 



c. Perfect, anterior view 



d. Right valve, dorsal view 



e. Right valve, inside 



f. Left valve, inside 



g. Left valve, dorsal view 



h. Portion of surface of valve 



2. Cythere Woodiana (old individuals), p. 29. 



a. Left valve, outside 



b. Right valve, outside 



c. Perfect, dorsal view 



d. Perfect, anterior view 



e. Left valve, hinge-line 



f. Right valve 



g. Portion of surface of valve . 



. x 25' 





. x 25 





. x 25 





. x 25 

 . x 25 



Crag. 



. x 25 





. x 25 





. x 150 , 





. x' 25 





. x 25 





. x 25 





. x 25 



Crag 



. x 25 





. x 25 





x 150 



3. Cythere laqueata, p. 30 



a. Right valve, outside 



b. Perfect, dorsal view 



c. Perfect, anterior view 



d. Left valve, dorsal view 



e. Left valve, hinge-line 



f. Right valve, hinge-line 



g. Right valve, dorsal view 



h. Portion of surface of valve 



25 

 25 

 25 

 25 

 25 

 25 

 25 



: Crag. 



X 150 



4. Cytherideis Tamarindus, p. 49. 



a. Perfect, left valve upwards 

 [The faint reticulate punctation is not shown in the figure.] 



b. Perfect, dorsal aspect . . . . x 



x 25 



25 



Crag. 



5. Cythere lacunosa, p. 31. 



a. Right valve, outside 



b. Perfect, ventral aspect 



X 25 

 x 25 



Crag. 



6. Cythere sphceridolineata, p. 36. 

 Right valve, outside 



. x 25 Crag. 



7. Cythere retifastigafa, p. 36. 



Left valve, outside (old individual) 



. X 25 Crag. 



