PLATE XII. 



Figs. 1 and :l. Protocaedium altum, Torh., j). 221 ; two different valves from Monglepatuli/, 

 Ootaloor yronp. 



Fig. ... 2. VviOTOCk-Rmvu Bis^cimi, Fori., \).-l-l\ ; Moni/lepaHfli/, Ootaloor groKp. 



Figs. 4 — 7. PiioTOCARDiuM PoNDiCHERRiENSE, rf 0/-i., p. 220; Aiuipdufi//, Trichi)iopolij group. 



Jigs. 8—10. Protocardiuii hillanum, Sow., p. 219; S and 9, young specimens" showing a 

 thinner and thicker variety; from Anapaiuly ; 10, a rather inflated shell laterally 

 with very strong concentric and posteriorly with radiating ribs; North of Serda- 

 mungalum, Trichinopoly groiq?. 



