704 GASTROPODA. [Pulmon."><i. 



the last more rapidly increasing than the others ; periphery and 

 base rounded. Suture impressed. Aperture slightly obi que. rotundly 

 lunate. Peristome thin, regularly arched. Columella short, arcuate. 

 Inner lip slightly expanded ; parietal wall with a thin shining glazr. 

 Umbilicus broad, gradate, about a quarter of the greatest diameter. 



Diameter Maj., 2-5 mm. ; min., 2-25 mm. : height. 1 mm. 



Dentition (Suter, T.N.Z.I., xxiv, 292. pi. 21, f. 20 ; 21). Eadula 

 having the formula 7 + 4+1 + 4+7. Central and lateral teeth tri- 

 cuspid ; marginals with 3 to 4 cutting-points. 



Jaw membranous, slightly arcuated, not tapering, faintly ver- 

 tically striated, with a slight median projection at the cutting-edge. 



Type in the Canterbury Museum, Christchurch. 



Hob. North Island : Wade ; Titirangi (H. S.) ; Thames (Adams) 

 Heretaunga (Brooks) ; Waimarama (A. Hamilton) ; Toko, near Strat- 

 ford (R. Murdoch) ; Ngaputahi (A. Hamilton) ; Forty-mile Bush 

 (H. S.) ; Horokiwi ; Dannevirke ; Otaki Gorge (Preston) ; Whangarei 

 (A. Suter). South Island : Kenepuru (McMahon) ; Greymouth, type 

 (Helms) ; Bealey (Haast) ; Akaroa (F. Suter) ; Riccartou Bush 

 (H. S.) ; Mount Sorners (W. W. Smith) ; Nelson ; Hooker Valley 

 (H. S.) ; The Nuggets, Port Molyneux (A. Hamilton). Stewart 

 [sland : Half-moon Bay (A. Hamilton). 



Var. montana, Suter, 1891. 



Patula Bianca, Hutt., var. montana, Sut., T. N.Z.I., xxiii, 88. P. (Charopa] 

 Bianca, Hutt., var. montana, Sut. : Pilsbry, Man. Conch. (2), viii, 97. 

 Charopa Bianca montana, Sut. : Hedley and Suter, P.L.S. N.S.W. (2), 

 vii, 655. Endodonta (Charopa) Bianca montana, Sut., J. de Conch., 

 xli, 268. 



Shell differs from the species by its larger size, the somewhat 

 coarse and more distant riblets, which number about 15 per millimetre, 

 and the darker colour, this being fuscous without any streaks. Proto- 

 conch also smooth, and interspaces between the riblets without spirals. 

 The umbilicus is slightly wider, about one-third of the greatest dia- 

 meter. 



Diameter, 2-75 mm. ; height, 1-25 mm. 



Dentition (Suter, f.c., 88, pi. 17, f. K, L). Jaw and radula are 

 very much like those of the species ; the formula of the radula is 

 13 +1 +13 ; laterals 4 to 5. 



Type in my collection. 



Hob. South Island : Hooker Valley, type 1 (H. S.) ; Kenepuru 

 (McMahon). 



4. Endodonta chrysaugeia, Webster, 1904. Plate 27, fig. 19, a. 



Endodonta (Charopa} chryaaurjeia, Webster, P. Mai. S., vi, 1904, 107, f. 3, 3a 

 in text p. 106. 



Shell minute, discoidal, umbilicated, brown, very finely radiately 

 ribbed, silky. Sculpture of the post-embryonic whorls consisting of 



