MOLLUSCA OF INDIA. ys" 
millim. inch. 
MHL NA A onic ara nagsticd ote she che 20 O23. 
i eameter Pee yy Shines res 4} 0-18. 
Length of aper ture eve eee 4 0-16. 
* Habitat. Tongoop, Arakan. 
“ Var. major, length 262 mm.; diameter 6; length of aperture 6. 
Of another specimen; length £ 23 mm.; diameter 55; length of 
aperture 53. 
“ Habitat. Pyema Khyoung, Bassein District, Pegu. 
‘‘A much more slender species than A. tenuwispira, Bens. (a 
variety of which also abounds in parts of Pegu), though there are 
signs of a passage. ‘The present appears to replace 4. tenwispira 
in Arakan and Bassein. Mr. Benson, to whom I sent a specimen, 
observes that it is intermediate between A. tenuispira and 
A. hastula, Bens.” 
No. 239.06.2.2 of the Blanford collection is represented by seven 
examples of this species, with this pencil note by Blanford, ‘‘ very 
hike tenwispira,” from two localities, Tongoop, in Arakan, and 
Henzada on the Irrawady, the respective locality was not indi- 
cated ; but they are all alike, two are of the same length as given 
in the description—viz., 20 mm., white. The largest specimen now 
figured is 22°25 x5 mm. 
Fortunately I have from Henry Blanford’s Collection (No. 
20.9,3.15) two specimens from Henzada, one of which I figure ; it is 
22-0 mm. long x5 in major diameter, which settles the “matter of 
habitat. They no doubt were given him by his brother. 
Under G@. pertenuis, var. major, William Blanford gives the dimen- 
sions of a larger form from the Bassein District, which is farther to 
the south. Three examplesfrom thislocality are in the Henry Blan- 
ford collection; they do not agree with pertenuis, the general shape 
is different, the apex particularly being much blunter. It cannot be 
therefore considered a variety—I name and figure it as G. bassein- 
ensis (Plate CLXIV. fig. 10 for apex). 
In Col. Beddome’s Collection (No. 682) is a single large speci- 
men, 26°75 in lengthx 7 mm., from Thyetmyo, named by him 
G. baculina; it agrees best with G. nathiana; it has much the 
general form of pertenwis, but is larger, is ash-coloured, with 
rough strong striation. Ke hasty examination recalls so-called 
tenwispira ot ‘Darjiling, but a closer shows quite a different increase 
of the whorls, and we they are by no means so flat. It is also 
milky white within the aperture, quite a distinguishing character, 
which I note is to be seen also in the typical specimen of G. per- 
tenuis from Henzada. Nevill records pertenwis from Akouktoung 
and Thyetmyo. This large form must be the variety of tenuispira 
referred to by Wm. Blanford as abounding in parts of Pegu, and in his 
‘Contributions to Indian Malacology,” 1865, J. A.S. B. vol. xxxiv. 
p. 95, he says: “ Achatina tenuispira, B., of small size, is common 
at Akouktoung and farther south.” 
On the same glass slip in the Blanford Collection (No. 
238.06.2.2) were gummed five specimens, labelled G. tenuisprra, 
