PLATE XVI. 



Figs. 1 & 5. CoRBULA EXULANS, Siol., p. 45; 1, la, side- and front-views enlarged, (see pi. i, 

 fig. 10) ; 5, internal view of right valve; the ends of the valve are injured, and 

 the beak has been drawn a little too prominent ; near Arrialoor, Arrialoor group. 



Fig. ... 2 CoRBULA CANCELLiFEEA, 5)fo^., p. 45 j (see pi. i, fig. 17) . 



Figs. ;3 — 4. CoRBULA PARSURA, &tol., p. 44 ; (see pi. i, figs. 23 — 24) ; 4, 4 a, side-, and front-, 

 views of a small specimen enlarged five times the natural size ; Garudumuiiga- 

 lum, Tricldnopoly group. 



Ne^era mutua, Stol., p. 46 ; south of Farchairy, Trkhinopoly group. 



CoRBULA minima, d'Orb., p. 44; (comp. pi. i, figs. 19 — 22). 



CoRBULA STRiATULOiDES, Forfj., p. 43 ; 13, 13 «, side-, and front-, views of right 

 valve; 14, left valve with the shell surface imperfect; Kololare, Trkhinopoly 

 group. 



Fi"-. ... 15. Nej;ra DETECTA, 5to/., p. 46 ; (see pi. iii, fig. 7). 



Fig. ... 16. PoROMYA GLOBULOSA, 2^o/-4., p. 47 ; (see pi. iii, fig. 8) . 



Fig. ... 17. PoROMYA LATA, i^y/-^., p. 47 ; (see pi. ii, figs. 8— 9). 



Fi'i-. ... 18. CoRiMYA pertusa, Stol., p. 77 ; (see pi. ii, figs. 12 — 13). 



Fig. ... 19. Pholadomya caudata, Roem., (see pi. ii, figs. 10 — 11). 



Figs. 20 — 24. Saxicava tenella, Stol., p. 88; north of Odium, Ootatoor group, 



Fi"-. ... 25. Tellina [Tellinides] adpressa, 5to^., var. J). 128; Moraviatoor, Ootatoor group. 



Fig. ... 26. Pholadomya pedisulcata, /S/y/., p. 81, (see pi. iv, fig. 1); near Alundanapooram, 

 Trichinopoly group. 



Figs. 27 — 28. Tellina [Tellinella] petrosa, Stol., p. 125; 27, right valve double the natural 

 size; the shell surface is only partially preserved on the original; 28, a some- 

 what imperfect cast; Garudaniungalum, Trichinojwly group. 



Fig. ... 29. Pholadomya connectans, Forbes, p. 80 ; original specimen of Forbes from Pondi- 

 cherry, in the collection of the Geol. Soc. of Loudon ; Valudayur group. 



Fig. ... 30. Tellina [ ? Peronjeoderma] scitulina, 5^^., p. 126; a perfect right valve ; twice 

 the natural size ; Comarapolliam, Arrialoor group. 



Figs. 31 — 33. Cytherea [Callista] fabulina, Stol. ; 32 is from Garudaniungalum, Trichinopoly 

 group ; the other specimens from near Odium, Ootatoor group. 



Fig. ... 34. Cytherea Arcotensis, Forb., p. 171; copy of the figure of Forbes' original 

 specimen. 



Figs. 35 — 40. Trigonia scabra. Lam., j). 314; specimens in various stages of preservation ; in 

 35 the tubercles on the ribs are partially drawn after another, better preserved 

 specimen, in order to show their character ; all arc from the neighbourhood of 

 Anapaudy , Trichinopoly group. 



