PLATE 42 

 Trachyleberis (Acanthocythereis) postcornis sp. nov. 

 Fig. 1. Dorsal view, carapace male, x 94. Holotype, Io. 4361. Lower Chocolate Clays, 

 sample 3499, Rakhi Nala. 



Fig. 2. Dorsal view, carapace female, X 94. Paratype, Io. 3162. Lower Chocolate Clays, 

 sample 3499, Rakhi Nala. 



Figs. 7, 10. 7, Dorsal view of hinge, x 232. 10, Internal view to show radial pore canals, 

 x 178. Right valve female. Paratype, Io. 3163. Lower Chocolate Clays, sample ^498 

 Rakhi Nala. ' 



Trachyleberis (Acanthocythereis) decoris sp. nov. 



lr|<;s - 3-5- Dorsal, left and right views, carapace male, \ 94. Holotype, Io. 4359. Upper 

 Chocolate Clays (upper part), sample 3640, Rakhi Nala. 



Figs. 6, 8, 9. Dorsal, left and right views, carapace female, x 94. Paratype, Io. 4310. 

 Upper Chocolate Clays (upper part), sample 3640, Rakhi Nala. 



