Endodonta.] GASTROPODA. 707 



slightly backward until they cross the periphery, straight on the 

 base ; interstices between the ribs ornamented with fine growth - 

 lines. Spire a little elevated, flatly convex. Protoconch smooth. 

 Whorls 5|, convex, slowly and regularly increasing. Suture not deep. 

 Aperture oblique, Innately rotund. Peristome straight, acute. Um- 

 bilicus broad, conical, nearly half the diameter, showing all the volu- 

 tions ; base rounded. 



Diameter, 4-3 mm. ; height, "2-2 mm. 



Type unfortunately lost. 



Hab. Wanganui (R. Murdoch) ; Ruatahuna (E. Best). 



Remarks. The ribs are firm, and much closer together than in 

 E. coma and E. pseudocoma. It may prove to be a distinct species, 

 but, with only a dead single example for comparison, it seems better 

 to unite it with E. coma, to which in many respects it is closely allied. 

 (Murdoch.) 



6. Endodonta ochra, Webster, 1904. Plate 27, tigs. 21, a, b. 



Endodonta (Charopa) ochra, Webster, P. Mai. S., vi, 1904, 107, f. 2, 2a in text 

 p. 106. 



Shell small, depressed, umbilicate, light brown, with close radiate 

 riblets, thin, slightly shining. Sculpture of the post-embryonic whorls 

 consisting of fine close radiate riblets, about 15 per millimetre, which 

 are slightly retractive, oblique near the suture, slightly arcuate at 

 the periphery, almost straight and flexuous on the base ; the inter- 

 stices with a few growth-lines, and rather indistinct fine and close 

 microscopic striae. Colour shining gold when first matured, becoming 

 wan and creamy with age. Spire slightly raised, broadly convex. 

 Protoconch of If whorls, smooth, convex. Whorls 4 to 4, convex, 

 regularly increasing, periphery and base rounded. Suture impressed. 

 Aperture oblique, rotundly lunate. Peristome simple, acute, margins 

 converging. Columetta vertical, arcuate. Inner lip thin, not re- 

 rlexed ; parietal wall with a very thin white glaze. Umbilicus mode- 

 rately wide, about a quarter of the greatest diameter, deep, gradate. 



Diameter, 3-5 mm. ; height, 1-5 mm. 



Animal having the foot bright yellow. 



Dentition unknown. 



Type in Mr. Webster's collection. 



Hab. North Island : Waiuku, common, type (Webster) ; Birken- 

 head (A. Suter) ; near Henderson (H. S.). 



7. Endodonta pseudocoma, Suter, 1894. Plate 27, figs. 22, a, b. 



Charopa pseudocoma, Sut., P.L.S. N.S.W. (2), viii, 495, pi. 23, f. 9, a-e. 

 Endodonta (Chiropi) pseudocoma, Suter, J. de Conch., xli, 271. 



Shell small, discoidal, broadly umbilicated, fuscous, radially costate, 

 not shining, thin, semitransparent. Sculpture of the post-nuclear 

 whorls consisting of somewhat unequal obliquely retractive radial 



23* 



