Endodonta.] GASTROPODA. 697 



1. Endodonta novoseelandica, Pfeifier, 1853. Plate 27, fig. 13. 



Pupa novoseelandica, Pfr., M.H. Viv., iii, 1853, 530 ; P.Z.S., 1852 (1854), 

 149 ; Reeve, Conch. Icon., xx, pi. 14, f. 12G ; Kiister, Conch. Cab. (2), 

 i. pt, 15, 135, pi. 17, f. 18, 19; Hector, Cat. Land Moll. N.Z., 22. 

 P. neozelanica, Pfr. : Button, T.N.Z.I., xvi, 191 ; M.N.Z.M., 22. Tesse- 

 raria novoseelandica, Pfr.: Suter, T.N.Z.I., xxvi, 129, pi. 16, f. 17; 

 Hedley and Suter, P.L.S. N.S.W. (2), vii, 660. Endodonta (Phenacharopa) 

 novoseelandica, Pfr. : Pilsbry, Man. Conch. (2), ix, 29, pi. 6, f. 60 ; pi. 8, 

 f. 1,2: Suter, J. de Conch., xli, 272, pi. 9, f. 3, a. b. 



Shell subcylindrical, perforated, thin, not shining, costate. Sculp- 

 ture of the post-nuclear whorls consisting of numerous fine flexuous 

 retractive riblets, somewhat inequidistant, about 8 per millimetre ; 

 interstices with minute growth-striae, reticulated by microscopic dense 

 spiral lines. Colour fuscous, variegated with yellowish- white spots, 

 principally about the suture and sometimes on the base. Spire high, 

 cylindrical, 3 to 3| times the height of the aperture, apex subrotund. 

 Protoconch of 1J smooth convex volutions. Whorls 1 to 7J, rather 

 convex, regularly increasing, the last high and somewhat ventricose ; 

 base convex. Suture impressed. Aperture subvertical, ovate, straight 

 above. Peristome simple, straight, margins remote. Columella sub- 

 vertical, almost straight. Inner lip slightly dilated above. Perfora- 

 tion narrow, not deep. 



Diameter, 2 mm. ; height, 4-75 mm. (type). 



Animal nearly white ; the oculiferous tentacles greyish-black, 

 clavate, long (about 3 mm.) ; the tentacles short (about f mm.), white, 

 rounded in front. Mantle central ; neck with 2 blackish stripes 

 running backwards from the eye -peduncles ; tail sharp above, slightly 

 tapering, without mucous pore. There is a distinct peripodial groove, 

 to which run down the whole length of the foot shallow diagonal 

 grooves. Sole white, with a slightly darker median field. Length of 

 body, 9 mm. : breadth of sole, 1-25 mm. 



Dentition. Suter, T.N.Z.L, xxiv, 300, pi. 23, f. 53, 54. 



Jaw arcuate, ends blunt, with distant vertical striae ; upper margin 

 roundly denticulated, a blunt median projection on the cutting- 

 edge. 



Radula having the formula 90x11 + 5+1 + 5+11. Central 

 tooth quadrate, tricuspid, the mesocone reaching to within a short 

 distance of the posterior end of the base ; side cusps each with a small 

 cutting-point. Lateral teeth somewhat larger than the central, 

 tricuspid, the mesocone extending a little over the next row of teeth. 

 Marginals broader than long, the sixth to twelfth tooth tridentate, 

 the mesocone being the largest, the thirteenth to fifteenth with 4 

 denticles, of which the inner second is somewhat longer, last mar- 

 ginal with 1 cutting-point. 



Type in the British Museum. 



