Prof. E. Forbes on Fossil Invertehrata from Southern India. 123 



Genus Phasianella, Lamarck. 



1. Phasianella? incerta, sp. nov. PI. XIII. fig. 8. 



I have applied this name provisionally to a fine fossil shell, from Pondicherry, 

 exhibiting a spire of five gradually decreasing, slightly convex whorls, and a large 

 ventricose, ovate body-whorl. It is smooth, and resembles Achatina Zebra in 

 form. The mouth is unfortunately partly concealed and partly broken, but I have 

 little doubt that better specimens will show it to be a Phasianella. The specimen 

 figured measured 2 inches in length and yo across the body-whorl. 



Genus Turritella, Lamarck. 



1. Turritella pondicherriensis, sp. nov. PI. XIIL fig. 4. 



T. testa elongata, crassa, anfractibus concaviusculis, ad suturas marginatis, incrassatis, 

 rugosis, in medio 4-5 costatis, costis filiformibuSj interstitiis striatis ; suturis profundis ; aper- 

 tura angulata, basi carinata, plana. 



Transverse diameter of lowest whorl ly^^ inch. Height Oy^^ inch. The largest specimen 

 must have been nearly 5 inches long when entire. 



A strong shell, resembling a Nerinsea. The whorls are very flat and concave 

 in the centre, where from four to five thread-like ribs encircle them spirally : the 

 lowermost of these threads is most prominent. The whorls are divided from each 

 other by a very deep suture, which is margined by the thickened and irregular 

 crenated upper margin of the continuous whorl. The base is flat and keeled, and 

 the aperture is quadrangular. 



Locality, Pondicherry. 



2. Turritella monilifera, sp. nov. PI. XIIL fig. 2. 



T. testa conica, anfractibus convexis, transverse 3-costatis ; costis granulatis, in anfractibus 

 superioribus cequalibus ; costa infei'iori in anfractu ultimo obsoleta ; apertura rotundata, basi 

 convexa. 



Transverse diameter of lowest whorl Oy"^ inch. Height 0^ inch. 



Shell moderately elongated, tapering, with rather ventricose whorls divided by a 

 deep suture. There is a considerable space between the uppermost transverse 

 ridge of one whorl and the lowermost of another. Of two specimens examined, 

 one had eleven whorls ; the other was a fragment of a much larger example. 



It is distantly related to the Turritella granulata of the Blackdown greensand. 



Locality, Pondicherry. 



3. Turritella ventricosa, sp. nov. PI. XIIL fig. 3. 



T. testa brevi, anfractibus ventricosis, superioribus 4-costatis, ultimo 9-costato, costis laevibus : 

 apertura ovato-rotunda ; basi rotundata. 



Breadth of last whorl 0} inch. Height Oy% inch. 



