MoUusca of the Tai-Hu. 
319 
fossil shells of the species found in that district in a recent paper.' I was, therefore, 
interested to notice similar shells lying about in the village of Moo-Too between Soo- 
chow and the Tai-Hu. On inquiry, however, we learnt that they were the shells of 
molluscs sold in shops as food and not procured locally. On visiting the provision 
shops in the village we saw large quantities on sale and were informed that they were 
brought from Ningpo. Those on sale were mixed with shells of Nassa and Potamides 
that had a distinctly estuarine facies ; shells of Balanus were attached to some of them. 
I figure three shells purchased in a living condition at Moo-Too. They agree with 
Neumayr's figures in their approach to bilateral symmetry as well as in being very 
small, though they vary somewhat in the latter feature. They also agree in these res- 
pects with living shells from water of low salinity in the Chilka Lake {op. cit., pi. xvi, 
fig. 6). Beside them I figure a shell of a small phase sold in the bazaar at Singapore 
and said to be obtained from beds in the harbour. In this phase bilateral asymmetry 
is much more marked. Neumayr's var. minuta is in all probability, therefore, a 
dwarfed form that lives in water of low salinity, but there is no real evidence that it 
lived or still lives so far up the Yangtse as Neumayr thought. Capt. A. F. Cole, 
R.A.M.C., who was for many years resident at Ningpo, tells me that water of very 
different salinities is to be found in the immediate neighbourhood of that place. 
BIBLIOGRAPHY. 
[Works cited on pp. 72-74 of this volume are not cited here.] 
Annandale, N. .. .. "The Mollusca of the Lake Biwa, Japan":— M^w. 
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. . " Mollusca of the Inle Lake, Southern Shan States " : — 
Rec. Ind. Mus., XIV, pp. 103-182, pis. x-xix (1918). 
Benson, W. H. . . . . "Mollusca of Chusan" -.—Ann. Mag. Nat. Hist., IX, 
pp. 486-490 (1842). 
.. Chusan Shells" :—/owm. As. Soc. Bengal, XXIV, 
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Boettger, O. .. .. "Zur Kenntniss der Melanien Chinas und Japans 
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Brusina, S. .. " Orygoceras, eine neue Gatropoden Gattung", etc., 
Beitra. Paldont. Osterreigh-Urgarns, pp. 33-46, pi. xi 
(1882). 
Clessin S. . . • • Anodonta in Chemnitz's Conch.-Cab. (ed. Kiister) IX, 
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.. "Stiidien uber die Familie den Paludinen", Malak. 
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Crosse, H. and Fischer, P. .. "Note sur la faune malacologique de Cochinchina, 
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pen connues": — Journ. Conch., XI, pp. 343-379, 
pis. xiii-xiv (1863). 
I Mem. Ind. Mus., V, pp. 338, 350, pi. xvi, figs. 3-6 (1916). 
