32 MOLLUSCA. 
oblique and well rounded, the last one large, inflated, but somewhat 
angular at base; a little shouldered : suture well marked and whitish. 
Aperture obliquely elliptical, modified posteriorly by the penultimate 
whorl; peristome broadly reflected, retreating as it passes before the 
umbilicus, not fully flattened, white, or tinged with rose-reddish, 
especially in the dark-coloured specimens. Umbilicus large, and 
nearly circular. 
Length more than an inch; breadth half the length. 
Found at Upolu and Tutuila, Samoa Islands, at an elevation of 
from 200 to 1500 feet, on plantains, and on Dracena terminals. 
Couthouy ; Drayton. 
This is larger than any species hitherto described, and resembles 
Bulimus levus inform. It may possibly be the same as P. bulimotdes, 
Lesson. 
Figure 88, brown variety, with the animal ; 88 q@, front view of the 
yellow variety, 
PARTULA ZEBRINA (Gould). 
Testa variabilis, ovata, tenuis, alba, flava vel fulva, plerumque strigis 
longitudinalibus flecuosis albis variegata, spiraliter tenuistriata, um- 
bilico rimato perforata; spira anfractibus ad quinque rotundatis, 
ultimo ventricoso: apertura elliptica, peristomate albo, laté reflexo, 
planulato ; plica columellart magna. 
Partula zebrina, Goutp; Proceed. Boston Soc. Nat. Hist., 11. 196. 
March 1847. Expedition Shells, 33. 
Animat elongated, pointed behind, rather depressed, tentacles long, 
pale cream-colour, reticulated on the neck with ranges of oblong 
meshes, on the sides with radiating ones, tips of tentacles bluish, no 
marginal furrow. 
SHELL ovate, short, ventricose, thin, in colouring variable, being 
