97 



Aperture elongate - oval, somewhat expanding anteriorly ; 

 columella with a very prominent spiral plait. 



The shell is variable in its proportionate dimensions. The 

 figured specimen has length, 3 ; width, 1 ; a large example has 

 breadth, 1*5; length of aperture, 2 ; estimated length, 5*5 mm. 



Off Brown's River, Tasmania, E. Harrisson!. 



Syrnola Petterdi, nom. mutand. 

 Obeliscus Tasmanicus, Petterd., Jour. Conch., 1884, p. 40; non 

 S. Tasmania, Ten. -Woods (Styloptygma), 1877. 

 Tasmania. 



Syrnola punetospira, spec. nov. 



Shell minute, acuminately oval, rather thin, sub translucent. 

 Spire whorls three and a-half, convex, of rather rapid increase> 

 sculptured by forward-curved striae and distant indistinct linea- 

 tions ; suture impressed. Pullus of one and a-half hyaline, 

 exsert whorls continued into an erect loop with an immersed 

 tip ; its last whorl graduating in size to the first spire-whorl, 

 somewhat inflatedly rounded and sculptured by ten spiral rows 

 of punctures. Aperture elliptic-oval, front lip slightly effusively 

 dilated on the left; columella with a large twisted plait. 



Length, 2*25; greatest width, 1*0 mm. 



George Bay, Tasmania, W. JF. Petterd/. 



A minute shell, with well-rounded and rather rapidly-increas- 

 ing whorls, with a distinctive sculptured pullus. Several 

 examples. 



Odontostomia deplexa, spec. nov. 



Shell minute, imperforate, moderately stout, smooth, shining, 

 white, sculptured with microscopic growth-lines (without spiral 

 striae). Whorls live, of moderate increase, convex, slightly pro 

 tuberant at the posterior suture. Pullus concealed, except the 

 papillary-like tip of the loop. 



Aperture oval, columella with a strong transverse fold at its 

 origin. 



Length, 3; width, 1*1 mm. 



Most like 0. lavis, but the whorls are more convex, shell more 

 cylindroid, besides being much smaller. 



Frederick Henry Bay, Tasmania (W. L. May); S. Australia 

 {B. Tate)] Victoria {J. H. Gatlifff). 



Odontostomia varians, spec nov. 

 Shell small, acuminately oval, moderately stout, dull white 

 (dead). Pullus pellucid, smooth, papillary as a whole, forming a 

 small lop-sided bend. Whorls five, flatly convex, separated by a 

 broad deep suture ; sculptured by four deep narrow spiral 

 grooves, separating flat interspaces of dissimilar width (the first 



