156 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY, 



receding below. Inner lip oblique, slightly thickened and reflected. 

 Umbilicus deep, funnel-shaped, patulous, margined by a slightly 

 elevated ridge, occupying about one -third of the greater diameter 

 of the shell. Diam. maj. 24, min. 20 mm. ; height 12 mm. 



Type in my collection. 



Hah. — Cape Maria van Diemen. 



The former lighthouse -keeper, Mr. McGahey, very kindly collected 

 some of these shells for me. So far no fresh or living specimens have 

 been obtained, and both the colour of the shell and the animal remain 

 unknown for the present. This species is so distinct from all the 

 other New Zealand species of Rhytida that I thought it well worth 

 describing and figuring, notwithstanding the poor material at my 

 disposal. It may be considered as an intermediate form between 

 R. Greenwoodi and R. Dimnice. 



Endodonxa (Charopa) teansenna, n.sp. 



Shell small, whitish with irregular streaks of chestnut, finely ribbed, 

 with distinct revolving threads on base, umbilicated. Sculpture : All 

 the whorls, except the protoconch, are finely ribbed, the riblets being low 

 and undulating, and about 18 in number permillim., and the interstices 

 microscopically decussate ; under the lens a number of revolving lirae 

 are visible on the base. Colour nearly white, with ii'regular streaks 



4 



and blotches of chestnut on the upper surface. From the periphery 

 down to the base there is a change in colour pattern, smaller and 

 zigzag lines predominating. Spire flat and very little raised above 

 the last whorl. The apex consists of 1^^ whorls, the first of which 

 is smooth, the following half microscopically decussate. Whorls 5, 

 at first very slowly, then more rapidly and regularly increasing, 

 convex ; periphery and base also convex. Suture well impressed. 



