Lcevilitorina.] GASTROPODA. 189 



1. Laevilitorina antipodum, Filhol, 1880. Plate 35, fig. 9. 



Assiminea antipodum, Filh., Compt. Rend., xci, 1094 ; Miss. I.C., 1885, 523. 



Shell small, turbinate, rimate, smooth, rather fragile. Oblique 

 fine growth-lines form the only sculpture. Colour black, olive-brown, 

 or horn-colour. Epidermis thin, dull or very slightly shining. Spire 

 conical, a little lower than the aperture, outlines convex. Protoconch 

 small, globose, of 1J smooth, convex, and polished whorls, mostly 

 eroded. Whorls 5, first slowly, then rapidly increasing, convex ; base 

 rounded. Suture deep. Aperture broadly oval, oblique, angled above. 

 Peristome discontinuous, but margins connected by a parietal callus, 

 sharp, not thickened. Basal lip very slightly reflexed. Columella ob- 

 lique, arcuate, brown, with a moderate white inner callus. There is 

 a narrow umbilical chink, present also in young specimens. Oper- 

 culum with, the nucleus near the inner margin. 



Diameter, 2-3 mm. ; height, 4 mm. (type). Diameter, 2-9 mm. ; 

 height, 4 - 5 mm. (specimen in my collection). 



Dentition. Similar to that of L. caliginosa. 

 Type in the Mus. Hist. Nat., Paris. 



Hab. Campbell Island (Filhol, Dr. L. Cockayne) ; Auckland 

 Islands (Professor H. B. Kirk). 



2. Laevilitorina bifasciata, n. sp. Plate 35, fig. 10. 



Shell small, subperforate, globosely ovate, smooth, dark brown 

 with two yellowish bands. Sculpture consisting of dense, retractive, 

 and slightly sinuous incremental lines. Colour dark- or greenish- 

 brown, the last whorl with a narrow and inconspicuous yellowish 

 spiral band below the suture, and a broader and more distinct band 

 on the base. Epidermis thin, waxy. Spire conic, its height about 

 f that of the aperture. Protoconch broadly rounded, smooth. 

 Whorls 3^, convex, the last large ; base flattish. Suture deeply im- 

 pressed. Aperture higher than broad, ovate, vertical, angled above, 

 rounded at the base. Peristome thin and sharp, the margins connected 

 by a thin callus over the parietal wall. Columella subvertical, slightly 

 arcuate. Inner lip a little reflexed, forming a narrow umbilical chink. 

 Operculum thin, horny, light-yellowish, paucispiral. 



Diameter, 2-8 mm. ; height, 3-5 mm. 



Radula very similar to that of L. caliginosa,, the outer marginal 

 tooth with about 12 small denticles. 



Type in my collection. 



Hab. Antipodes Islands, together with Cremnobates parva (Captain 

 Bollons). Only a few specimens were found. 



