11 
VITRINA DIMIDIATA, Pfeiffer. 
Vitrina dimidiata, Pfr., P.Z.S., 1851, Cat. Pul. Brit. Mus., 71. 
Shell much depressed, periphery ovate, very thin, sculptured with 
minute arcuate stria:, silky, shining, pale horn colour ; spire nearly flat; 
whorls two and a quarter, which are open beneath, and with a narrow 
membranaceous edge ; aperture horizontal, as large as the whole shell ;' 
peristome simple, with regularly curved margins. 
Height, -05; greatest breadth, -2; least breadth, -14. 
Mi lax. 
Back keeled to the shield ; dorsal shield granulated or sliagreened, 
truncated, with two small pores on its hinder edge ; shell convex.' 
MILAX ANTIPODARUM, Pfeiffer. 
M. antipodarum , Pfr., Cat. Pul. Brit. Mus., 177. 
Ovate, attenuated, rugose (in spirits), brown, back sharply keeled to 
the shield ; back with parallel grooves diverging from the shield, with 
short straight branches passing across from one to the other ; shield short 
oblong, rounded behind, smooth, with netted grooves; breathing hole 
rather behind the middle of the right side ; foot in three bands, the 
central band rather the broadest, with series of grooves on each side 
from a zig-zag central groove, the side bands with close parallel straight 
cross grooves. 
Daudebardia, Hartman. 
Shell perforated, horny, depressed, few-whorled, horizontally and 
rapidly involuted, with the last whorl very large ; aperture oblique, 
ample.—Pfeiffer. 
Animal elongated, too large for complete retraction into the shell ; 
tail very short; mantle reflected over the shell-margin, and furnished 
with a posterior lobe on the right side.—Woodward. 
DAUDEBARDIA NOVOSEELANDICA, Pfeiffer. 
Daudebardia Xovosealaudica, Pfr., M.H.V., vol. 5, p 10 No 10 
Shell imperforated, greatly depressed, ambit oval, rather solid, sculptured 
with distinct stiue of growth and radiant impressed lines, fulvous spire 
small, occupying one-eighth of the entire length of shell; whorls 24, the 
last laterally sub-compressed j columella thickly callous above. 
Height, 2J : length, 10 ; diam., 7 mill. 
Hab., New Zealand (Hochstetter). 
Succinea, Draparnaud.— (Amber Snail). 
Shell imperforate, thin, ovate or oblong ; spire small ; aperture large, 
obliquely oval , columella and peristome simple, acute. Animal large, 
tentacles short and thick, foot broad ; lingual teeth like Ilelix. Inhabits 
damp places, but rarely enters the water.— Woodward. 
