12 EDGAR A. SMITH. 
VALVATELLA MINUTISSIMA. 
(Pl. IL, fig. 10.) 
Shell very small, turbinate, very narrowly perforate, pellucid white, delicately 
spirally striated; whorls 4, very convex; aperture rounded; peristome thin, with the 
columellar margin a little thickened and expanded. 
Length, 2°5 millim. ; greatest diam., 2. 
Winter Quarters, Feb. 20, 1902. 
Only a single specimen, which, although so small, appears to be adult. The 
surface is a little worn, but the spiral strize are quite evident in places. It differs from 
V. refulgens in its more elevated spire, smaller size, and sculpture. 
LEPETA (PILIDIUM) ANTARCTICA. 
(Pl. IL, figs. 11, 11a.) 
Shell small, cap-shaped, thin, dirty-whitish, narrowly ovate at the circumference, 
moderately elevated, with the apex curved over anteriorly, so that it is almost in a 
position perpendicular to the margin. The sculpture consists of fine radiating lire 
which are minutely scaled by the lines of growth, and those down the posterior part of 
the shell are rather more conspicuous and stronger than those upon the anterior surface. 
Interior smooth, white, slightly iridescent. 
Length, 4 millim.; diam., 2°75; height, 2. 
No. 10 hole, 130 fathoms. 
Only a single specimen obtained. Narrower than the L. coppingeri, Smith, from 
the Straits of Magellan, with fewer radiating lire. 
BULLINELLA GELIDA. 
(Pl. IL, fig. 12.) 
Shell cylindrical, a little broader below than above, very thin, white, sculptured 
with slightly oblique curved lines of growth ; apical perforation small, funnel-shaped, 
roundly keeled at the circumference ; aperture narrow above, widening anteriorly ; 
outer lip on a level above with the end of the whorl, deeply sinuated; columella 
thickened, reflexed, oppressed. 
Length, 13 millim.; diam., 7. 
‘Winter Quarters, 130 fathoms. 
Without any striking features, but apparently separable from allied forms. It is 
represented in Arctic seas by B. nucleola, Reeve, which seems to me distinct from 
B. alba, Brown, with which it has been united by Pilsbry (Man. Conch., vol. xv., p. 291). 
