PRESTON: NEW LAND-SHELLS FROM NEW GUINEA. 19 
two. Suture shallow; aperture oblique, having a distinct callosity, 
presenting a somewhat heliciniform appearance, Peristome expanded 
and reflexed; columella stout, with a protuberance at base ; umbilicus 
very narrow, partly concealed by reflexion of lip. Shell striated with 
somewhat coarse growth-lines, otherwise destitute of sculpture. 
Colour pale whitish yellow, deepening on earlier whorls. Alt. 19 mm. ; 
diam. maj. 23, min. 19mm.; aperture diam. 9, alt. 9 mm. 
Hab.—Mafor Island, coast of Dutch New Guinea. 
The type is in the British Museum. 
The nearest ally of this shell is Papwina grata (Mich.), from which, 
however, it differs chiefly in the following respects: the spire is more 
acute, the protuberance on the columella is less developed, the 
umbilicus much more closed, and the lp is not so much expanded ; 
moreover, there is no spiral sculpture on the base of the shell. 
