GASTEROPODA. 85 
Parruta vArtA, Brop.; Proc. Zool. Soc., 1832, p. 125. Bulimus 
varius, PFEIFFER; Symb. i. 86, i. 124. 
Anat like that of P. Taheitana, varying only in the depth of 
colouring. 
Figure 92, shell, with the animal. 
ParTuLA VANIKORENSIS, Quoy and Gaim. (Helix); Astrol., ii. 215, 
ail, Chie Wty 
Bulimus Vanikorensis, DesH.; in Lam., An. sans Vert., vill. 131. 
ANIMAL not essentially different from the two preceding, excepting 
that it is somewhat paler. 
Figure 93, shell, with the animal. 
ACHATINELLA MARMORATA ( Gould). 
Testa oblongo-ovata, coloribus castanets, cinereis et albidis marmorata, 
leviter striata, imperforata: spira acuta, anfractibus sex convexis, 
superné sub-tabulatis, ultimo magno, ventricoso ; apertura ovata ; pe- 
ristomate simplicit, modicé evaso ; plica columellari alba, compressa, 
feré transversa, valde exstante. 
Achatinella marmorata, GouLp ; Proceed. Boston Soc. Nat. Hist., ii. 
200. March 1847. Expedition Shells, 35. 
SHELL dextral, rather solid, of an elongated, acutely conical form, 
composed of six convex whorls, which are somewhat shouldered 
superiorly ; the last large in proportion, and ventricose : surface deli- 
cately striated with lines of growth; colour a dusky chestnut, marbled 
with white, irregular, and angular markings, generally arranged some- 
what in longitudinal stripes, the whole seeming to be coated with a 
very thin ash-coloured epidermis. Aperture moderately large, ovate, 
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