650 GASTROPODA. [Pulmnnata. 



sometimes completely covering it ; a thin glossy layer on the parietal 

 wall. 



Diameter Maj., 12-25 mm. ; min., 9-75 mm. : height, 8-25 mm. 



Dentition. Button, T.N.Z.I., xvi, 178, pi. 9, f. X ; pi. 11, f. N. 



Jaw arcuate, flatly plaited, the plaits indenting both margins. 



Radula with the central tooth rectangular, tricuspid, the side 

 cusps minute ; laterals bicuspid, the inner cutting-point much longer 

 than the outer ; marginals broad, with several cutting-points, the two 

 inner ones largest. 



Type in the Canterbury Museum, Christchurch. 



Hob. Southland, type (G. M. Thomson) ; Preservation Inlet 

 (Captain Hutton) ; Haast River (Haast) ; Grreymouth (R. Helms) ; 

 The Nuggets, Port Molyneux (A. Hamilton) ; Kenepuru (McMahon) ; 

 Stewart Island (T. Kirk). 



Remarks. Wellington (T. W. Kirk) is also given as habitat of the 

 species, but I wish to point out that T. W. Kirk's statements regarding 

 the habitat of land-shells are not reliable. 



2. Thermia (?) expeditionis, Suter, 1909. Plate 25, fig. 19. , b. 



Thermia (?) expeditionis, Suter, Subantarct. Islds. N.Z., i, 1909, 34, pj. 1, 

 f. 6-8. 



Shell small, depressed globose, uml>iliciii.ed. very thin, translucent, 

 somewhat shining, radially plicately ribbed. Sculpture : Protoconch 

 microscopically spirally striate ; the succeeding whorls with radial 

 rounded 'and flexuous riblets, about 10 per millimetre, slightly in- 

 equidistant, and getting obsolete upon the base. Colour uniformly 

 olive. Epidermis thin and slightly polished. Spire depressed conoidal. 

 its height less than that of the aperture. Protoconch of 2 slightly 

 convex whorls. IVho-rls 4j, regularly increasing, flatly convex, peri- 

 phery of last whorl rounded, very faintly angled ; base convex. 

 Suture deep. Aperture oval, somewhat excavated by the parietal 

 wall, which is slightly convex. Peristome sharp, simple. Columella 

 vertical, the inner lip slightly reflexed. Umbilicus narrow, open, 

 dnep. 



Diameter Maj., 2-9 mm. ; min., 2-5 mm. : height, 2 mm. 



Animal unknown, and therefore the generic position somewhat 

 uncertain. 



Type in the. Canterbury Museum. Christchurch. 



Hob. Auckland Island, under a. log; one specimen only (Pm- 

 fessor Benham). 



3. Thermia subincarnata, Suter, 1894. Plate 9, fig. 6, a. l>. 



I'yrrJia subincarnata, Sut., T.N.Z.I., xxvi, 1893 (1894), 133, pi. 19, f. 33 : 

 pi. 20, f. 34, 35. Flammulina (Pyrrlia) subincarnata, Sut., J. cle Conch., 

 xli, 248 ; Man. Conch. (2), ix, 338. 



Shell globosely depressed, sub- or im-perforate, uppei siiri';icc 

 dull, base polished, reddish, thin, pellucid. Sculpture consisting of 



