OP SOUTHEEN INDIA. 177 



/ 12. Oytheeea [Caryatis] turgidula, Stoliczka, PL VII, Eigs. 24-27. 

 Cyth. rotundate ovata, turgidtda, polita, concentrice striato-Urata ; liris ac 

 striis prope timbones obsoletis ; declivitate lunulare paulo excavata, areale convexa ; 

 lunula elongato elliptica, linea impressa marginata, medio paululum elevata ; area 

 latiusGula^ brevi, paulo excavata^ exterius liaud marginata ; margine ventrale 

 uniforme curvato. Cardo in valva sinistra dentibus tribus cardinalibus ac uno lunulare 

 distante instructus. 



Length of largest specimen ... ... ... .,, 15 m. m. 



Height : length ... ... ... ... 0-84-0-88 



Thickness : height ... ... ... ... 0*72 - 0'75 



The more 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 with a polished surface, but on the larger one con- 

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

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

 Caryatis^ amongst which C, Manillce may be mentioned. 



Eig. 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 quite 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, — Neighbourhood of Odium, in a blackish or greyish highly calca- 

 reous sandstone and in a whitish limestone. 



Formation.— Ooi^toox group. 



\/ 13. Cytherea [Oahyatis] telxjgensis, PL VII, Eigs. 28-29. 

 Cyth, testa sub-triangulari, altissima, convexiuscula^ incEquilaterali, antice bre- 

 viter rotundata postice longiori ; umbonibus valde prominuUs, attenuatis^ incurvis 

 et approximatis ; declivitate Umulare moderate excavata^ areale paululum curvata ; 

 lunula longa^ elliptica, linea impressa marginata^ vix concaviuscula ; area haud 

 distincte marginata ; margine ventrale uniforme curvato ; in superficie striis crassi- 

 usculis^ numerosissimis, interdum sulcis duobus aut tribus ad intervalla positis et 

 interruptis notata, Cardo in valva sinistra dentibus tribus cardinalibus, postico 

 tenui elongato, duobus alteris brevibus crassiusciilis, diver gentibus, et deMe lunulare 

 parmilo instructus. 



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



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



Thickness : height ... ... ... ... 0*60 



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

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



2 w 



