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Mr. L. Reeve on two new species of ‘Shells from Cambojia. 208 
XXX.—On two new Species of Shells from Cambojia. 
By Lovert Reeve, F.L.S. &e. 
To the Editors of the Annals and Magazine of Natural History. 
GENTLEMEN, 
Will you do me the favour to publish in your September 
Number the following descriptions of two very superb and 
striking new land-shells just received by Mr. Samuel Stevens 
from the south-eastern corner of the Asiatic continent? They 
were collected by an enterprising French traveller and naturalist, 
M. Mouhot, in the interior of the kingdom of Cambojia, lying 
between Siam and Cochin China. No European had hitherto 
reached the locality; and M. Mouhot relates how he accom- 
plished the journey amidst savage tribes at great personal risk. 
Heliz Mouhoti. 
Shell sinistral, deeply umbilicated, conoidly globose, rather 
inflated ; upper portion of the whorls of a rich-toned transpa- 
rent chestnut-colour, edged at the sutural margin with purple- 
black ; lower portion of the whorls white, turning to a delicate 
straw-colour by the overlying of a shining, transparent, horny 
epidermis, encircled below the periphery and around the umbi- 
licus with two very decided, broad, rich purple-black bands ; 
whorls six, corrugately puckered throughout at the sutural 
margin, the first four whorls very densely granosely wrinkle- 
striated in the direction of the lines of growth, the striz gradu- 
ally disappearing on the fifth whorl; aperture lunar-orbicular ; 
lip simple, reflected partly round the umbilicus. 
Out of two thousand species of Helix at present known, 
the only one of the same type as H. Mowhoti is the large 
H. Brookei, collected by Mr. Arthur Adams, in company with 
Sir Edward Belcher, on the mountains of Borneo, during the 
voyage of the ‘Samarang,’ and described by Mr. Arthur Adams 
and myself in the ‘Zoology’ of that expedition. AH. Mouhoti, 
of which Mr. Stevens has received a few specimens in va- 
rious stages of growth, is even larger and more inflated than 
H. Brookei. In adult specimens, the last whorl measures 
64 inches in circumference, 3 inches in diameter, and the shell 
is about 2 inches high. It differs from H. Brookei in being 
conspicuously, but not broadly, umbilicated, and in the ma- 
ture lip not being in the least degree reflected at the margin. 
The lip itself (not the margin) is reflected at its junction with 
the body-whorl, partly round the umbilicus, as in the Nanina 
form of the genus. But the most striking feature of the species 
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