MitreU't.'l GASTROPODA. 435 



6. Mitrella stephanophora, Suter. 1908. Plate 19, tig. 18. 



Mitrclln t< i>h<in<>[,l">nt. Suter, P. Mai. S.. viii, 1!>08, 17!>, ])1. 7. f. o. 



Shell small, ovoid, smooth and polished, translucent, vello\vitfh, 

 with 2 spiral hands of brown zigzag lines on the body-whorl. Sculp- 

 ture consisting of a few close spiral threads upon the short neck. Colour 

 yellowish-white, with fulvous zigzag markings on the lower half of the 

 later spire-whorls and continued on the periphery of the body-whorl, 

 a second similar spiral band upon the base. Spire rather short, conical, 

 a little higher than the aperture ; outlines faintly convex. Proto- 

 conch papillate. Whorls 5, regularly increasing, flatly convex, the 

 last ventricose and rounded ; base somewhat contracted. Suture 

 not much impressed. Aperture narrow, angled above, not much 

 narrowed below, and without a distinct canal. Outer lip .straight 

 above, rounded below, smooth inside. Columella subvertical, lightly 

 turned to the left below. Inner lip very narrow and thin, smooth, 

 spreading over the straight parietal wall. Operculum unknown. 



Diameter, 2-4 mm. ; height, -t-5 mm. 



Animal unknown. 



Type in my collection. 



Hah. New Zealand, exact locality unknown (E. A. Annett). 



7. Mitrella subantarctica, Suter, 1908. Plate 19, fig. 19. 



Mitrella subantarctica, Suter, P. Mai. S., viii, 1908, 180, pi. 7, f. o. 



Shell small, acuminate, smooth to the naked eye, polished, semi- 

 transparent, fulvous. Sculpture consisting of fine and dense micro- 

 scopic spiral strisu on all the whorls, lightly decussated by the fine 

 and somewhat oblique growth-lines. Colour yellowish-brown, with 

 a darker band below the suture, produced by the lower part of the 

 preceding whorl. Spire high, conic, nearly 1^ times the height of 

 the aperture ; outlines straight. Protoconch of 1J whorls, papillate. 

 Whorls 6, regularly increasing, lightly convex, the last whorl rounded 

 and a little contracted at the base. Suture impressed, but not deep. 

 Aperture oval, subvertical. with a very short widelv open canal. 

 Outer lip sharp, not much thickened, convex, smooth inside, some- 

 times with a slight contraction below. Columella vertical, somewhat 

 arcuate, bent to the left towards the base. Inner lip narrow, smooth, 

 extending over the faintly excavated parietal wall. Operculum un- 

 known. 



Diameter. 2-7 mm. ; height, 54-6 mm. 



Animal unknown. 



Type in my collection. 



Hab. Near the Bounty Islands, in 50 fathoms (Captain Bollons). 



