102 CRETACEOUS PELECYPODA 



described as Solecurlus hy Eoi-bes, but the form of the muscular impressions 

 and the very short pallial sinus make it much more pvolxible that it belongs to 

 Pharella. One of our specimens shows the hinge line below the beaks preserved, 

 but there are no teeth perceptil)le on it, which must have been l)roken off before the 

 specimen was buried in the rock, as is of common occurrence in recent species 

 of Pharella. In shape our species recalls d'Orbigny's Sol. Guerangeri. 



Locality.— VondidixexYY, in a brownish, grey, compact, highly calcareous 



sandstone. 



Formation.— \a\nCiAjViY group (?). 



TAGELUS, Gray, 1847, (see p. 98). 

 TAGELrs Albbrtinus, d'Orligvy, PI. IV, Fig. 3. 



1817. Tcllitia Alberthut, d'Orb., Pal. de la voy. Astrulalif, pi. 4, fi^'. 23. 



Tag. valoa sinistra elongata, fere (pquilaterali, parte ]josteriori jmulo longiori 

 niiam anterior), snperjicie concentrice stt'iata, in medio impressa atque ad marginem 

 ventralem insinnata, antice rotundata ; umbone prominenle, postic;' ve?'sris incarm, 

 fiilcro liqamenti longo ac crassulo, umbone duobus dentibus purds distantibus 

 instructo. 



Height of the valve : ils approximate length ... ... 037 



Onlv the single figured left valve has been found. Its elongated form de- 

 pressed "in the middle, the distinct concentric striation, the great length of the 

 fulcrum and the presence of two (though very small) teeth on a thickened margin of 

 the hino-e so entirely agree with the recent species of Tagelns, that I have no hesi- 

 tation in placing our fossil in that genus. The recent Tagelns mostly are brackish 

 water species ; but although we have in South India not yet proved the existence 

 of a large brackish fauna, the occurrence of Eelicivm in marine beds at Comara- 

 polliam suflaciently indicate that land was not far off, and if this were the case 

 the want of rivers would also be extremely improbable. Our species has a close ally in 

 d'Orbigny's Sulec. (TagelusJ Bobinaldinus, which is only somewhat more elongated 

 in proportion to its height. 



D'Orbin-ny's figure of Tellina Albertina is in proportion a little higher, but 

 there can be no doubt that it represents the same species as ours. 



Locality. — Comarapolliam, in a soft, whitish sandstone. 



Formation. — Arrialoor group. 



