OF SOUTIIERN INDIA. 210 



6. Caedium [ ? Pectunculus] scrobiculatum, StoliczJca, n. XI, Pig. 11. 



C. {.'' Pect.) testa parvnla, rotiindate quadranyulari, sub-cquilaterali antice dls- 

 tincter, injlata, in utroque latere fere ccqualiter convexa ; infra ac postice lentissime 

 curvata, seu suh-truncata, umhonibus prominul'is, latis, iiicurvis, superficie polita, 

 sub-l(svigata, striis concentricis ac radlantibm minutissimis ac confertissimis, vix cons- 

 piciiis, notata. 



Height of shell : its length ... ... ... ... 1-08 



Thickness „ : „ ... ... ... (approximate!}') 077 



This small species is characterized by its somewhat greater or equal height in 

 proportion to length, rather strong convexity,* and the polished surface, which to 

 the eye only appears to be minutely punctured. However, under the lens very fine 

 decussating stria? can be observed, and when the glazed siu^faco of the shell is re- 

 moved the radiating lines become well visible. Though the few specimens examined 

 are small, they do not appear to belong to a particularly young shell, but to a 

 naturally small species. It is possible that the species is a Lcevicardlum, but more 

 specimens are required before that question can be satisfactorily answered. 



Locality. — Garudamungaliun, in bluish calcareous sandstone, with various small 

 species of shells ; rare. 



Formation. — Trichinopoly group. 



PROTOCARDIUM, Boy rich, 1817, (vide p. 209). 



1. Protocardium hillanum, Soiverhy, PI, XII, Figs. 8-10, and PI. XIII, 



Figs. 1-3. 



1813. Cardium hillanum. Sow., Min. Conch., i, p. 41. 



1865. „ „ apud Zittel, Denksch. AoaJ., Wien, xxiv, pt. 2, p. 146,— f«m .sv/HOH-. 



Frot. testa crassd, suh-rotundata, suh-ceqiiilateraU, nmboiiibus panlo 2}>'0)ni- 

 nentibtis, obtusatis, inciirvis, ap>proxiinatis instructa, antice ac infra rotundata, 

 p)Ostice oblique tnincata ; snperfwie costulis concentricis confertissimis ap)proximatis 

 IcEvigatis et in regione postica 12-18 costis radiantibus, distajitioribus prop)e marginem 

 superiorem ohsoletis ornata ; fulcris incrassatis ; impressionibus muscularibus pro- 

 fun dis ; sinu x)a llii postico parvo. 



Height of shell : its length ... ... ... v.wying from 0'80-0'94 



Thickness „ : „ ... ... ... „ „ 0-61-077 



There is, as already recorded by Prof. Forbes, no difference to be observed 

 between specimens from Europe and those from South India ; they agree in every 



* It ought to he about \\ m. m, more than shown in figure \kt; and in fig. M the po.sterior margin should be 

 slightly more truncate. 



