GASTROPODA. 5 



Whorls 4^, rapidly increasing, very convex, the last very large, rather ventricose ; 

 protoconch, consisting of 1 ^ whorls, smooth, rounded, forming a rather large button- 

 like apex ; aperture semiovate, dirty whitish, delicately grooved within, the grooves 

 corresponding with the external lirse, occupying not quite of the whole length of the 

 shell ; labrum thin, simple ; columella slightly oblique, very little arcuate, with a thin 

 reflexed callosity at the lower part which forms the slight rimation. 



Length, 9 millim. ; diam., 5'5 ; aperture, 5' 5 long, 2*5 wide. 



Winter Quarters, 130 fathoms. 



Only two dead examples of this species were obtained. It is remarkable for its 

 thin, delicate structure and the fine spiral lirse. These are not all of the same strength, 

 but here and there occurs a more slender one than the rest. Upon the penultimate 

 whorl there are about six or seven, five on the preceding volution, and about twenty 

 on the last. There are traces of a thin periostracum which would be striated by the 

 lines of growth. These are continuous both upon and between the lirse. 



Temporarily placed in Admete until further information respecting it can be 

 obtained. 



AMAUROPSIS ? ROSSIANA. 

 (PL L, figs. G, 6a.) 



Shell globose, imperforate, rather thin, clothed with a brownish olive periostracum, 

 exhibiting fine oblique lines of growth, numerous rather obscure spiral striae, and a few 

 peculiar oblique malleations upon the last and penultimate whorls ; spire somewhat 

 raised, eroded at the apex ; whorls 5 (?), 2-3 remaining ones very convex, separated 

 by a rather deep suture ; aperture obliquely semicircular, bluish white, occupying 

 nearly 3 of the entire length of the shell ; collumella oblique, rather straight above, 

 curving anteriorly into the lower margin, covered with a white defined callus which is 

 thickened and reflexed over the umbilical region. Length, 29 millim. ; greater diameter, 

 25 ; lesser diameter, 21 ; aperture, 18 millim. long, 11 '5 wide. Operculum unknown. 



Hut Point, Feb. 13, 1904. 



Two dead shells only were obtained at this locality. They are remarkable on 

 account of the peculiar oblique obscure ridges upon the last and penultimate whorls. 

 These are most noticeable upon the penultimate volution just above the insertion of the 

 outer margin of the aperture. Between the oblique ridges the surface is somewhat 

 flattened and has a malleated appearance. The species seems to be separable from the 

 several forms which occur at Kerguelen Island. Provisionally placed in Amauropsis 

 until the animal and operculum are known. 



NATICA (NEVERITA) DELICATULA. 

 Natica delicatula, Smith, " Southern Cross" Repoit (1902), p. 206, pi. xxiv., fig. 6. 



Winter Quarters, 130 fathoms. 



One small specimen only. It has the spire preserved, and consists of 3 well- 



