PLATE X. 



rigs. 1 — ~. CvntiXA [Cicatuea] coRDiALi.s, .S('o/., p, 199; figures in natural size; Serdumun- 

 ijalum, Tricliinopoly group. 



Fig. ... 3. GouLDiA PLANissiMA, i'l;/'^., p. 2S9 ; Monglepaudi/, Ootatoor fjrvup. 



Figs. ■! — S. GouLDiA TiiiGONOiDES, Slol., p. 290 ; different varieties, all in natural size ; east of 

 Anapaudy, Tr'tclnnopohj rfi-onp. 



Figs. 9 — 10. OiMS liKPLETA, iS^o^., p. 288; 9, a cast, natural size; 10, a perfect shell, twice the 

 natural size ; Odhiw, Ootatoor yronp. 



Fig. ... 11. Opisoma Geinitziana, 8tol.,\\. 288; side-, front-, and inner views of the right 

 valve with the unilio and the posterior margin somewhat imperfect; Mora- 



viatoor, Ootatoor group. 



Figs. 12 — \\. GiJOTiiiANiA JUGOSA, /^oy^., p. 289 ; Odium, Ootatoor group. 



Figs. 15 — 21. Cardita Jaquinoti, d'Ortj., p. 290 ; figs. 18 and 21 are taken from the same speci- 

 men ; Ninni/oor, Arrialoor group. 



