128 Prof. E. Forbes on Fossil Invertebrata from Southern India. 



Shell pear-shaped, oblong, very regular in form and sculpture. The spire is 

 scarcely prominent and of only three whorls. The body-whorl is regularly par- 

 titioned by numerous equidistant spiral ribs, decussated by similar longitudinal 

 ones. The spiral ribs proceeding to and projecting from the outer margin of the 

 mouth form denticulations. 



Fusus infracretaceus and Fusus ornatus, both Neocomian fossils from the Aube, 

 species constituted by M. A. D'Orbigny, are allied, especially the latter, to the 

 Indian fossil, which however comes nearer a cretaceous species figured by Romer. 



Locality y Pondicherry. 



2. Pyrula cancellata, G. Sowerby, MSS. PI. XV. fig. 12. 



P. testa ventricos^, crass&, spiri brevissimi conica, anfractibus 5, ultimo late pyriformi, 

 superne carinato, supra carinam concaviusculo, undulato- striate et spiraliter late sulcato ; labio 

 interno incrassato, reflexo, inferne umbilicato, umbilico lato, marginato. 



Length 1 inch. Greatest breadth 9 lines. 



Shell broadly pyriform, with a very short spire, the surface marked by undulated 

 striae and spiral sulcations. The last whorl is strongly carinated above, the space 

 between the carination and the suture sloping but slightly concave. The pillar- 

 lip is broad and spreading. The columella is perforated by a broad umbiUcus 

 which is margined superiorly. 



"This species somewhat resembles in general form the Pyrula ficulnea of the 

 London clay and Calcaire grossier ; it may however easily be distinguished by 

 having a longer canal, by the anterior part of the last volution being covered by 

 coarse cancellations, and by its rather open umbiHcus." G. B. Sowerby, MSS. 



Locality, Trinchinopoly. The only specimen is in bad condition. 



Genus Rostellaria, Lamarck. 



1. Rostellaria cancellata, sp. nov. PI. XIIL fig. 18. 



R. test;i conica, spirft longa, anfractibus 6, rotundatis, bicarinatis, costis longitudinalibus 

 spiralibusque distantibus reticulatis. 



Length 0|| inch. Spire i inch. Breadth with lip i inch. 



A young shell, but easily distinguished by its wide window-like sculpture, formed 

 by the distant spiral ribs crossing other equally distant longitudinal ones. The 

 spire is much produced. 



Locality, Pondicherry. 



2. Rostellaria securifera, sp. nov. PI. XIIL fig. 17. 



R. testa laevi, spir^ conic^, anfractibus rotundatis, carinatis, labro externo longe producto, 

 carinato, bihainato (hamis obtusis?). 



