OP SOUTHEEN INDIA. 177 



12. Cytheeea [Cartatis] ttjrgidula, StoUczka, PI. VII, Pigs. 24-27, 

 Cyth. rotundate ovata, turg'iclnla, polita, concentrice strlato-lirata ; liris ac 

 striis prope timboiies ohsoletis ; declwitate lunulare pmdo excafcata, areale convexa ; 

 lunula elongato elUptica, linea imp)ressa marginata, medio paidulum elevata ; area 

 latiuscula, brevi, pernio excavata, exterius hcmd marginata ; margine ventrale 

 nniforme curmto. Cardo in valva sinish'a dentibus trlbus cardinalibus ac uno lunulare 

 distante instrnctus. 



Leugth of largest specimen ... ... ... ... 15 ra. m. 



Height : length ... ... ... ... 0-84 - O'SS 



Thickness : hei.sj'ht ... ... ... ... 0'72 - 0'75 



The move oval and comparatively more tumid form of the present species 

 readily distinguishes it from Cyth. \_Caryat^ Telugensis, n. sp. Young specimens 

 are almost perfectly smooth Avith a polished surface, but on the larger one con- 

 centric striae, gradually becoming stronger towards the ventral edge, are clearlv 

 traceable. The hinge-teeth are characteristic of those of other recent species of 

 Caryatis, amongst which C. ManiUce may be mentioned. 



Pig. 24 represents a somewhat more tumid variety with a little more distinct 

 concentric sulcations, but the shell certainly belongs to the same species, though 

 it would appear to have the anterior end shorter than others ; this is, however, 

 not qnite perfect in the original. This specimen is from a calcareous dark grey 

 sandstone from east of Odium. Another similar specimen is from a white lime- 

 stone ; it does not show on the well preserved shell the striae very strong, and they 

 become perfectly obsolete near the apex. 



The lunula is large, elongately elliptical, the area indistinctly marked, and 

 somewhat excavated. 



Locality. — Neighboiu'hood of Odium, in a blackish or greyish highly calca- 

 reous sandstone and in a whitish limestone. 



Formation. — Ootatoor group. 



13. Cytherea [Caryatis] telugensis, PI. VII, Pigs. 28-29. 

 Cyth. testa sub-triangiilari, altissima, convexiusciila, inaquilaterali, antice bre- 

 viter rotiindata postice longiori ; umbonibus valde prominulis, atteuuatis, incurvis 

 et approximatis ; declivitate Inmilare moderate excavata, areale paululum cibrvata ; 

 lumda longa, elliptica, linea impressa marginata, vix concaviuscula ; area hand 

 distincte marginata ; margine ventrale nniforme cnrvato ; in snperjicie striis C7'assi- 

 usculis, numerosissimis, interdum stdcis duobus aid tribiis ad intervalla positis et 

 interriiptis notata. Cardo in valva sinistra dentibus tribus cardinalibus, postico 

 tenui elongato, duobus alteris brevibus crassiuscidis, divergentibus, et dtnte lumdare 

 parvulo instructtis. 



Length of largest specimen ... ... ... ... 18 m. m. 



Height : length ... ... ... ... 0-91 



Thickness : height ... ... ... ... 060 



This species is a typical Caryatis, with almost uniformly convex valves, and 

 covered with rather fine concentric strias ; the thin longish posterior cardinal corres- 



2 w 



