GASTEROPODA. 89 
Achatina accineta (lapsu typog.), MicHeLs; Proceed. Boston Soc. 
Nat. Hist., 11.20. Jan. 1845. 
Achatina accincta, PretrFER; Monog. Helic. Viv., ii. 271. 
Achatina Sandiicensis, Prrirrer ; Proc. Zool. Soc., 1846, p. 32. 
AnimaL of a slate colour tinted greenish, darker behind the ten- 
tacles. 
Inhabits Oahu, Sandwich Islands. 
The specimens collected by the Expedition are generally more 
solid, opaque, and darker than those possessed by Dr. Mighels. They 
are oftentimes decidedly plicate longitudinally, and sometimes have 
revolving’ scratches. Some are banded in various ways with ivory- 
white, and have the lip more or less thickened and everted. The 
aperture is rather large, and the fold is sharp, placed at an angle of 
about 45°. 
Figure 97, the shell; 97a, shell, with the animal. 
ACHATINELLA GUTTULA (Gould). 
Testa parva, tenuis, lucida, rotundato-ovata, succinea, interdum castaneo 
zonata: spira obtusa, anfractibus sex convexiusculis, ultimo tumido, 
dimidiam longitudinis superante : apertura parva, lunata ; peristomate 
albo, incrassato, ad basim valde truncato ; columella curtd, plica parva 
mstructa, ad anfractum penultimum callo indutd. 
Achatinella guttula, GoutD; Proceed. Boston Soc. Nat. Hist., ii. 201. 
Expedition Shells, 35. 
SHELL small, thin, translucid, shining, short ovate, yellowish-green, 
slightly striated lengthwise, with sometimes a faint appearance of 
revolving rufous bands. Whorls six, short, slightly convex, the last 
tumid, more than half the length of the shell, forming an obtuse 
spire. Aperture small, lunate, lip thickened, whitish; basal notch 
large; columella very short, the fold small but distinct, and the 
penultimate whorl coated with callus. 
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