PLATE VY. 
Figs. 1 and 3.* Prroponta Ooratoorensis, Sto/.; p.43; 1-la, front-and back-views of a large 
Figs. 2 and 4. 
Fig. ... 10. 
specimen, the front side being devoid of the shell surface, and showing a few 
marginal impressions on the upper whorls; 38, front-and top-views of a cast-, 
the section of the aperture is taken through the internal thickening of the outer 
lip; both from near Odium ; Ootatoor group. 
Prrroponta nositis, Stol.; p.43; 2-2, front-and back-views; in the former the 
shell is perfect on the last whorl; 4 is a cast showing the disposition of the 
impressions; both from Garudamungalum ; Trichinopoly group. 
PrERODONTA BULIMOIDES, Sfol.; p. 42; front-and back-views of a young, but appa- 
rently complete specimen ; the shell surface is preserved, except in 5 4, on a por- 
tion of the last whorl; Veraghoor ; Arrialoor group. 
PrEeRopONTA ? TEREBRALIS, Sol. ; p. 42; 6, front-view of an imperfect specimen, on 
which the smooth shell surface is partially preserved ; 7 and 8, front-views of casts; 
the former showing the two columellar plaits distinctly, and the latter the lengths 
of the canal; near Odium ; Ootatoor group. 
Ontscta costettata, Stol.; p. 63; front-, side-,and back-views of anearly complete 
specimen from the sandstones 8. of Arrialoor ; Arrialoor group. 
Cyrnara creracea, Sfol.; p. 66; front,-side,-back,-and top-views of a specimen, on 
the last whorl of which the shell is mostly well preserved; Veraghoor; Arrialoor 
group. 
* p. 43, line 12 from below, read Figs. 1 and 3, instead of, Figs. 1—3. 
