DESCRIPTIONS OF FOUR NEW SPECIES OF MARINE SHELLS, 

 PROBABLY FROM CEYLON. 



By H. B. Preston, F.Z.S. 



Read 8th December, 1905. 



The four species about to be described formed part of the collection of 

 the late Mr. Hugh Nevill, and I am strongly of opinion that they were 

 collected in Ceylon, where he resided for many years. 



BULLIA CINEREA, n.Sp. 



Shell ovately fusiform ; remaining whorls 8, the first two and 

 a half transversely ribbed, the lower whorls smooth, with the exception 

 of the body-whorl, which is spirally grooved at the base ; dull ashen 

 grey, with traces of a pale violet band at the periphery ; suture 



peristome varicosely thickened and somewhat dilated at 

 the base ; columella descending in a curve ; aperture ovate, reddish 

 brown within. Alt. 29, diam. maj. 1 5-75 mm. ; aperture, alt, 13, 

 diam. maj. 6 mm. 

 Bab.— Ceylon (?). 



Nassa Nevilliana, n.sp. 

 Shell ovately fusiform, pale yellowish brown, an indistinct band of 

 darker brown appearing at the suture ; remaining whorls 7, trans- 



versely ribbed and spirally grooved throughout, giving the shell 

 a beaded appearance, the beading being more noticeable just below 



