Phenacohelix.] GASTROPODA. 669 



Jaw consists of about 33 narrow plaits, slightly overlapping at the 

 sides and indenting the concave margin ; under a high power they arc 

 seen to be strengthened by transverse waved strise. 



Radula (Plate 1, fig. 15) having the formula 8+18+1+18+8, 

 in numerous transverse nearly straight rows. The teeth are very 

 similar to the preceding species. 



Reproductive Organs (Plate 1, fig. 15). Male organ with the 

 retractor muscle at the apex ; the vas deferens forms a slender 

 tube, it unites with the verge in a small papilla a little below the 

 apex, separating from the oviduct at the base of the enveloping sac 

 or lobe ; the spermatheca situate somewhat high on the oviduct, 

 tapering, the upper half slender, with a globose termination. The 

 hermaphrodite gland, albumen-gland, and enveloping sac are similar 

 to the preceding species. 



The dentition of Patula Lucetta (Hutt,. T.N.Z.I., xvi. 162, pi. 11, 

 f. A.) is undoubtedly that of Endodonta cmna (jlohosa. the shell of 

 which resembles P. Stokesi ( = Lucetta). 



Type in the British Museum. 



Hob. North Island : Wairarapa, type (W. T. Locke Travers) ; 

 Hawke's Bay. type of P. Lucetta (W. Colenso) ; Ormondville ; Danne- 

 virke (Brooks) ; Forty-mile Bush (H. S.) ; Paekakariki (A. Hamilton) ; 

 Wellington (H. S.). South Island : Kenepuru (McMahon) ; Wairoa 

 Gorge (Meeson) ; Greymouth (R. Helms). 



Remarks. The species closely resembles Endoflnntd coma. Gray, 

 but is more narrowly umbilicated, just a trifle more finely costate, 

 and has the body-whorl roundly angulated above the middle. Mr. 

 E. A. Smith's name has, no doubt, priority ; moreover, good figures 

 of the species are given. 



7. Phenacohelix (?) subantarctica, Suter, 1909. Plate 26, fig. 10, a, I. 



Phenacohelix (?) subantarctica, Suter, Subantarct. Islds. N.Zeal., i, 1909, 

 36, pi. 1, f. 9-11. 



Shell very small, depressed globose, perforated, finely costate, 

 thin and very fragile, with radiate whitish and brown streaks. Sculp- 

 ture consisting of somewhat flexuous subequidistant fine radiate rib- 

 lets, about 16 per millimetre ; the interstices with numerous very 

 fine incremental lines, decussated by microscopic spiral strise. Colour 

 yellowish- white, upper surface with somewhat unequal light-brown 

 radiate streaks ; base uniformly brown. Epidermis thin, horny, not 

 shining. Spire low, broadly conoidal, with blunt apex, its height a 

 iittle less than that of the aperture ; outlines slightly convex. Proto- 

 conch fiattish, of 1^ very lightly rounded whorls, which are indistinctly 

 microscopically spirally striated. Whorls 4, regularly increasing, 

 moderately convex, the last very lightly angled at the periphery ; 

 base convex. Suture impressed. Aperture lunate, angled above. Peri- 

 stome sharp, thin. Outer lip convex, subangled ; basal lip broadly 



