EXPLANATION OF PLATES. 



The figures are of natural size except when the amount of enlargement is 

 specially stated in the explanations. The numbers in parentheses refer to the 

 register numbers on the specimens. The specimens are in the South African 

 Museum except when otherwise stated. 



PLATE II. 



FIGS. PAGE 



1. Serpula cf. concava (J. Sow.) ... ... ... 63 



la, x 2. Eailway cutting between milestones 24-24f on the line 

 from Uitenhage to Graaff-Keinet, about three miles from Uiten- 

 hage (332). 



2, 3. Pecten (Syncyclonemd) orbicularis J. Sow. 65 



2. Left valve. Sunday's River (279) ; 3, right valve, portion of 

 surface above the middle of the valve on the posterior side, x 4. 

 Sunday's Eiver (280). 



4. Pecten (Camptonectes) cottaldinus d'Orb. 65 



Bight valve. Cliff below old school-house on the right bank of 

 Sunday's River, Dunbrodie (306). 



5. Pecten (Camptonectes) projectus Tate ... ... ... ... 66 



5. Right valve ; 5a, portion of surface in the posterior half of 

 valve about half-way up, x 6. Coega River. 



6. Pecten (Chlamys) cf. subacutus Lam. ... ... ... ... 69 



6. Right valve ; 6a, left valve. Sunday's River (304). 



7. Lima (Acesta) obliquissima Tate 71 



Right valve. Sunday's River. 



8. Lima (Mantellum) neglecta Tate 74 



8. Left valve ; 8a, portion of surface on the postero-lateral 

 part, x 8. Left side of Coega Valley, half a mile down from 

 the railway (45 3g). 



9. Perna atherstoni Sharpe ... ... ... ... ... ... 75 



Left valve. Walton's Farm on Sunday's River, just below Dun- 

 brodie (311). 



