178 CEETACEOUS PELEGYPODA 



ponds to a thick grooved one in the right valve, and the two anterior cardinals are 

 somewhat diverging, short and stout ; the lunular tooth is also small, as in the recent 

 species of Caryatis, The striation in fig. 29 has been made accidentally a little too 

 strong as compared with the size of the shell. 



Localities. — OomarapoUiam, in a whitish soft sandstone (one specimen) ; 

 Garudamungalum, in a dark grey calcareous shell-sandstone (two specimens). 

 These three specimens from the two localities are perfectly identical ; it is evidently 

 a rare shell. 



Formation, — Arrialoor and Trichinopoly groups. 



V 14. Cytherea [Oabyatis] intercisa, Stoliczka, PL VIII, Pigs. 1-2. 



Cyth. testa sub-quadrangulariter ovulata, tumida, crassa, concentrice striata, 

 antice ac postice truncatim rotundata^ ad marginem ventralem leviter convexa ; umho- 

 nibus paulo prominulis, parvis, obtusiusculis, approximatis ; declivitate antica panto 

 excavata, postica fere recta^ deinde sub-rotundata ; superficie in specimine majori 

 laciniatim seu lamellose concentrice striata ; lunula parva, ovata^ medio elevata, linea 

 impressa marginata ; area angusta^ paulo excavata, extus hand marginata ; dente 

 lunulare ab dentibus cardinalibus remote sito. 



Lengtb. of largest specimen ,.. ... ... ... about 45 m. m. 



Height : length ... ... ... ... O'SS 



Thickness : height ... ... ... ... 0-80 



Of the two specimens found one is small and the other considerably larger ; 

 on the former the shell surface is partially preserved in its original state, exhibit- 

 ing fine concentric striae ; on the second the striae, where seen, are lamellar and thin, 

 but the shell surface is partially worn off and partially the shell is removed alto- 

 gether. The form is very characteristic, almost of a quadrangular shape with 

 rounded edges, though if the shell was well preserved, the form would no doubt 

 be more distinctly rounded or broadly oval. The thickness is great, such as is not 

 often to be met with in recent species of Caryatis, The cardinal teeth are not 

 visible, but the impression of the remote lunular tooth is traceable. 



Localities, — North-west of Kunanore and north of Alundanapooram, in a 

 brownish sandstone with numerous minute, brown oolitic grains ; apparently rare. 



Formation, — Trichinopoly group. 



CYPEIMEEIA, Conrad, 1864, (vide p. 157). 

 1. Cypeimeria analoga, Porbes, sp., PL V, Pigs. 21-23. 



1846. Venus analoga et eximia, Forbes, Trans., Geol. Soc., Lond., vii, p. 147, pi. xv, figs. 20-21. 

 1850. Venus analoga, Forbes, d'Orbigny, Prod, ii, p. 2^7,— idem auctorum. 



Cyp, testa late-ovata, compressiuscula, antice paulo producta, rotundata, postice 

 rotundate stib-truncata, ad marginem ventralem leviter curvata, marginibus undique 



