254 Rev. T. Hincks on new 
When the zocecium is open, the orifice is occupied in great 
part by the entrance to a tubular passage (through which the 
polypide issues), which is formed below by the thickened 
border of the operculum, and above by a distinct chitinous 
rim. These two lips are brought together so as to close the 
entrance when the operculum is shut. 
Lepralia nitescens, n. sp. 
Zoecia quincuncial, short-ovate, very ventricose; surface 
dense, vitreous, highly polished and glistening, smooth, with 
obscure radiating ridges, punctured, sometimes areolated 
round the margin; orifice much higher than broad, immersed 
in the older cells, arched above, slightly contracted a short 
way above the lower margin, which is a little curved out- 
ward; peristome not raised, the inner edge of the oral 
aperture finely denticulate; 3 or 4 spines above; on each 
side, in a line with the lower margin, a strong nodulous 
process ; about the centre of the margin an avicularium, with 
rounded mandible, placed on a swelling, which extends some 
way below the mouth, and facing sideways, mandible directed 
upwards; often on the front of the cell near the bottom (to- 
wards one side) a bracket-like projection, bearing a rounded 
avicularium. Occium (?). 
Zoarium forming a brownish patch on shell. 
Loc. Houston-Stewart Channel, Queen Charlotte Islands 
(Dr. G. M. Dawson). 
Lepralia claviculata, n. sp. 
Zoecia ovate or lozenge-shaped (sometimes irregular in 
shape and size), quincuncial, depressed; surface glossy, 
thickly covered with minute circular punctures, which give it 
a pretty speckled appearance ; orifice arched and expanded 
above, slightly narrowed below, contracted by a small pro- 
jection on each side a short distance above the lower margin, 
which curves slightly outward. Avicularia keyhole-shaped, 
laced on a distinct area very much smaller than that of the 
cell, and commonly immediately above a zocecium, mandible 
directed upward. Oactum very large, elongate (much 
higher than broad), depressed towards the opening, rising 
above into a kind of knob, white, glossy, thickly punctured ; 
the surface for some distance above the oral arch frequently 
traversed by longitudinal furrows. 
Zoarium a large, spreading crust. 
Loc. Houston-Stewart Channel, Queen Charlotte Islands 
(Dr. G. M. Dawson). 
