PLATE III. 



Fig. ... 1. Anatina [Ckrcomya] arcuata, Forb., p. 78 ; side-and upper views, the posterior 

 termination has been restored in outline ; PondkUerry, Valudayur group . 



Fio-s. 2 4. Poromya superba, Siol., p. 48 ; 2, a a, side- and umbonal views of right valve ; 



3, front-view of a nearly complete specimen ; 4, hinge of left valve ; specimens 

 2 and 3 are from Garudamungalum , 4 from Koloture ; Trichinopoly group. 



Fi<». ... 5. Pholadomya KADiATULA, -S/o/., p. 80 ; side- and upper views of a cast specimen, the 

 posterior end lias been restored; Alundanafjooram, Tricldnopoly group. 



Fig. ... 6. Ne^era mdtua, Slol., p. 46; 'comp. pi. xvi, fig. 6); side- and umbonal views of 

 the right valve ; Parchairy, Trichinopoly group. 



'»• 



Fig. ... 7. Ne^ra detecta, Stol., p. 46; 7, side-view twice the natural size, (comp. pi. xvi, 

 fig. 15) ; 7 a, umbonal view, natural size ; Odium, Ootatoor group. 



Fig. ... 8. Poromya GLOBULOSA, i^ori., p. 47 ; side-and front-views, (comp. pi. xvi, fig. 16); 



ComarapolUam, Arrialoor group. 



