54 LAND AND FRESHWATER 
Pegu and Darjiling; four were certainly from the latter place, but 
one was quite a different species and smaller, and may have come 
from Pegu. 
Nevill gives the Garo Hills on two specimens from my collection ; 
this cannot be an accurate determination, as I have nothing like 
it. The ten specimens from Assam are something else. 
Recently (July 1917) further material has come to hand: when 
going through Wm. Blanford’s collection of duplicate shells, I came 
on four pill- ‘boxes containing Glessuwla from Pegu, with true locality 
and named as follows :— 
No. 1 contained Achatina tenutspira from Bassein District, 14 
examples; No. 2 from Akouktoung, 18 examples; No. 3 Achatina 
pertenwis from Tongoop, which is on the Arakan Yoma, 3 examples ; 
No. 4 ‘intermediate between tenwispira and pertenws ” from Pyema 
Khyoung, Bassein District, 20 examples. These clear up doubts 
on distribution and show so well what Blanford’s views were at 
the time he was describing Pegu Glessulas. No. 4is G. basseinensis, 
described further on. No. 2 differs from this in many respects, 
due, no doubt, to its habitat on the Limestone rocks, which the 
name implies, ‘“Akouk” being lime and “toung” a hill in 
Burmese ; I remember the place well. I adopt it as the specific 
name. No 1 is a well-defined species differing from the preceding, 
which I name G. nathiana, from the Burmese name “nath” for 
spirits or fairies of woods and hills. 
JLESSULA BASSEINENSIS, n. sp. (Plate CLXIV. fig. 12, apex ; 
Plate CLXI. fig. 3.) 
Locality. Bassein, Pegu, three specimens. Pyema Khyoung, 
Bassein, six specimens (W. 7. Blanfprd). Type. No. 19.9.3.15 
BM. 
Shell elongately turreted ; sculpture close, fine, regular, rather 
coarse ; colour ochraceous; spire elongate, sides nearly straight, 
very slightly acuminate near the-blunt apex, 100: 33-7; suture 
moderately impressed ; whorls 11, sides very flatly convex ; aper- 
ture narrowly ovate; columellar margin curved slightly. 
Size: major diam. 6°25; alt. axis 25-0 mm. 
This is the var. major of pertenuis Blanford alluded to above ; it 
is not so attenuate in general form, the apex is much stronger 
and blunter, fewer whorls, white, longer, and the sculpture 
coarser; a comparison of figure (No. 3) with those of true tenwi- 
spira trom ‘Teria Ghat and hastula shows, better than any 
description, how much it differs. 
GuieEssuLa (Riswerrra) NATHIANA, Nn. Sp. 
Locality. Bassein District (W. 7. Blanford). Type. No. 
2206.06.1.1 B.M. 
Shell elongately turreted; sculpture regular, fine, raised, close 
strie throughout; colour strong, ochraceous; spire elongate, sides 
