132 Prof. E. Forbes on Fossil Invertehrata from Southern India. 



A very beautiful species. The whorls are all ribbed longitudinally ; the ribs 

 very numerous, rounded, and about as broad as the interspaces. The spire is of 

 some length and turreted in consequence of the flatness of the whorls, which sud- 

 denly turn in towards the suture, the angle being furrowed by a deep and narrow 

 canal. The sutures are deeply impressed. The lower half of the body-whorl is 

 marked by regular, rather distant, well-defined spiral striae. 



Locality, Pondicherry. 



6. Voluta cincta, sp. nov. PI. XII. fig. 6. 



V. testa oblonga, spira conica, anfractibus 6, superne angulatis, longltudinaliter costatis, 

 costis in angulis turgidis et prope suturam subobsoletis, spiraliter sulcatis, sulcis numerosis 

 interstitiis striatis, marginibus internalibus crenulatis ; apertur^ angulata, elongata, 4-5-plicat&. 



Length 1| inch. Breadth 0^^ inch. Spire 0^ inch. 



A more or less Cone-like shell, variable in form and sculpture, the number of 

 longitudinal ribs and the strength of the spiral ones varying in almost every spe- 

 cimen. The former are usually about eighteen. One character is however con- 

 stant ; the summits of the whorls are angulated and more or less flattened. The 

 flattened space is marked by spiral strise only, and is bordered at the suture by a 

 thickened crenulated rim. 



The eocene Voluta undosa is related to this species, but differs in sculpture. 

 No described cretaceous form approaches it. 



Locality, Pondicherry ; also at Trinchinopoly. 



7. Voluta breviplicata, sp. nov. PL XII. fig. 7, a, h. 



V. tests, ventricosa, spira brevi, longltudinaliter plicate ; anfractu ultimo inflato, superne 

 plicato, plicis numerosis, brevibus, evanescentibus, spiraliter striate, striis in medio distantibus, 

 inferne approximatis ; columella excavata ; apertura oblonga. 



Length of last whorl 1 inch. Breadth 0^^ inch. 



This volute, which is very distinct from all its companions, is easily recognised 

 by its ventricose body-whorl, crimped at the upper part by numerous short pli- 

 cations, which are decussated near the suture by two deep sulcations, representing 

 the canal seen in the last species. These sulcations are part of a series of spiral 

 strise which become very distinct in the central portion of the body-whorl, and are 

 very numerous at its lower part. The pillar-lip is broad and expanded, and marked 

 at its lowest portion by a shallow groove. The mouth, in the specimen examined, 

 is obscured by rock. 



Locality, Pondicherry. 



8. Voluta citharina, sp. nov. PI. XII. fig. 8, a, h. 



