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DESCRIPTIONS OF THREE NEW SPECIES OF LAND SHELLS 

 FROM NEW ZEALAND. 



By Henry Sutfk. 



Read 9tli May, 1913. 



Some New Zealand land shells, collected by Mrs. G. B. Longstaff, 

 and also a number found by Mr. G. "W. Howes, of Dunedin, were 

 sent to me by the former for identification. Amongst them I found 

 the three new species which are now described and figured. 



Endodonta (Chakopa) Longstaffi, n.sp. 



Shell very small, snb-discoidal, the whorls very narrow, umbilicate, 

 with close radiate riblets, uniformly light brown. Sculpture of the 

 post-embryonic whorls consisting of very fine and close radiate riblets, 

 28 to 30 per millimetre, slightly flexuous above and Tipon the 

 periphery, straight on the base, with exceedingly faint microscopic 

 dense spiral striation, the interstices with a few fine incremental 



lines. Colour light brown, without any colour-markings. Spire 

 slightly raised, broadly convex, flat in the centre. Protoconch of 

 IJ smooth flattish volutions. Whorls Q\, narrowly coiled up, very 

 slowly increasing, convex, periphery regularly rounded. Suture well 

 impressed. Aperture oblique, rotundly lunate. Peristome simple, 

 acute, margins converging. Columella short, arcuate, vertical. 

 Umbilicus wide and deep, perspective, about one-third of the greatest 

 diameter. Height 1*5, diam. 2-8 mm. 



Bentitiofi unknown. 



Type in my collection. 



llab. — Oi-epuki, Southland (Mrs. G. B. Longstaff), type ; Wood- 

 haugh, Otago (Mr. G. W. Howes). 



Named in honour of Mrs. G. B. Longstaff, F.L.S., who discovered 

 the species when visiting New Zealand in 1910. 



Thalassohelix pygm^a, n.sp. 

 Shell \erj small, trochiform, narrowly urabilicated, smooth, pellucid 

 and thin, periphery distinctly angled. Sculpture consisting of fine 



oblique growth-lines and fine microscopic spiral striation, base with 

 spiral line more prominent than the others at some distance from the 



