Greenes 'new species of Jichatina, 
49 
instrument. The beautiful and shining colours of this Acha- 
TiNA, and the manner of their arrangement, forcibly remind 
us of the Helix nemoratis or hortensis, so common in the 
woods and hedges throughout France and England. 
There are two very distinct varieties of A. Steivartii — 
one dextral, or with whorls revolving from right to left. 
In the numerous specimens which I have received, there is 
no individual of single uniform colour — they are all green- 
ish, with a single brown band at the sutures: The collu- 
mella in this, as in the first variety, has the remarkable thick 
plait or callosity resembling the Tornatella fasciata. — 
The other variety is more globose and much depressed, be- 
ing three fourths of an inch in length, and half an inch in 
diameter; this shell is almost always dextral, and of a light 
yellowish colour — and the callous ridge along the inner 
margin is peculiarly striking. The contour of this variety 
resembles that of the Voluta fasciata. Linn, the lip of that 
species however is reflected. 
ACHATINA Oahuensis. 
testa oblonga — tenuissime striata — colore ferugineo 
rufescente — collumella rosea — apertura alba et rosea — 
labro tenui. — Plate 4, fig. 5. 
Oahu Achatina. — Shell dextral — oblong — about three 
fourths of an inch in length, and one fourth of an inch in 
diameter — whorls seven or eight, slightly rounded — sutures 
deeply impressed and crenulated — periostracha finely stri- 
ated and of a light dirty reddish brown colour — body ivhorl 
with an obsolete carina — apex chesnut colour — collumella 
plaited, as in A- Stewartii — outer lip thin — inside pinkish, 
darker near the edge. 
