i88 H. B. Preston : Netv species of Shells. [Vol. II, 



Altitude . . . . 10-5 mm. 



Diam., major . . . . 4*5 „ 



Aperture, alt. . . . . 9 ,, 



,, diam,, minor . . 73 ,, 



Habitat — Off Port Blair, Andaman Islands, 7 — 10 

 fathoms. 



Atys convex a, sp. no v. 



Shell umbilicate, tumid, ovate, constricted at the ends, pale 

 lemon colour, with two irregular narrow greenish bands especially 

 noticeable on the ventral surface, smooth, polished except at the 

 ends where it is spirally grooved ; apex closed ; aperture narrow 

 above, broadening below ; columella descending obliquely, curved 

 outwards, produced ; peristome simple, rising high above the 

 vertex. 



Altitude . . . . 3-25 mm. 



Diam. . . . . 2 ,, 



Habitat — Off Port Blair, Andaman Islands, 7 — 10 

 fathoms. 



Atys neglect a, sp. no v. 



Shell imperforate, elongately ovate, sub-cylindrical, rather 

 convex in the middle, greyish white, polished, smooth except at the 

 ends where several grooves appear ; apex closed ; aperture very 

 narrow above, moderately wide below ; columella oblique ; peris- 

 tome broadly thickened, bent slightly inwards, a little extended 

 above the vertex. 



Altitude . . . . 4 mm. 



Diam., major . . . . 2 ,, 



Habitat — Off Port Blair, Andaman Islands, 7 — ro 

 fathoms. 



Atys pacei, sp nov. ■ 



Shell straight, cylindrical, semi-transparent white, sculptured 

 throughout with fine spiral striae, becoming more numerous and 

 closel)^ set towards the base ; apex very narrowly perforate ; aper- 

 ture narrow above, dilated below ; columella obliquely arched ; 

 peristome simple, rising above the vertex. 



Altitude . . . . II mm. 



Diam., major . . . . 5 ,, 



Habitat— Off Port Blair, Andaman Islands, 7 — 10 

 fathoms. 



Atys vixumhilicata,s\). nov. 



Shell ovate, narrowly perforate, pale yellowish horn colour, 

 very finely spirally striate and rather coarsely grooved towards the 

 ends ; apex closed ; aperture narrow above, broadening below; 



