NOTES ON MR. W. M. DALY’S COLLECTIONS OF LAND AND 
FRESH-WATER MOLLUSCA FROM STAM. 
By W. T. Buanrorp, LL.D., F.R.S., ete. 
Read 12th December, 1902. 
PLATE VIII. 
Tne late Mr. W. Mahon Daly, by whose untimely death from fever 
in December, 1900, the Society lost a valuable member, was engaged 
during the last two years of his life in the Forest Department of the 
Siamese Government. In Siam, as in India, he made large collections 
of land and fresh-water Mollusca, and on three occasions he sent 
specimens to me for identification. In the last letter that I received 
from him, dated 12th October, 1900, with a box of shells from 
Lampun in North Siam, he forwarded some notes on species previously 
sent, and suggested that these notes might be put into shape and 
inserted in the Society’s journal. I think the best use I can make 
of the notes is to insert them in a list of the species that I have been 
able to identify. The greater part of this paper was written in 1901, 
but [ was unable to finish it then. 
The bulk of the collections are from Pitsunaloke, rather more than 
200 miles north of Bangkok, and from ees about 150 miles 
farther north and near Chieng Mai (Zimmé).! This last place is the 
chief town of the Laos country. A few specimens are without any 
definite locality. 
Some of Mr. Daly’s Siam collections have now been received in 
England, and by the kindness of Mr. H. B. Preston I have had an 
opportunity of examining them. The most important form not 
previously received is the fine Ampullaria described below as A. Dalyt. 
There are several fresh-water shells that I have not identified, but 
they are mostly represented by single specimens without any defined 
locality, and it is not quite certain that they are from the upper 
Menam valley around Pitsunaloke and Lampun. 
1 This town affords an object-lesson in the system of spelling Oriental place-names. 
It was formerly known on maps as Zimmé or Zimmay, and a snail found in the 
neighbourhood was called Hemiplecta Zimmayensis (Proc. Zool. Soc., 1888, 
p- 241). Then some French travellers used the spelling Xieng Mi ui, hence 
Amphidromus Xiengsis noticed further on. In Mr. H. W arington Smyth’s 
‘Five Years in Siam ”’ the place appears as Chieng Mai, and this is probably 
a nearly correct representation in English of the name as pr onounced. In Stieler’s 
Atlas the name is printed Schieng Mai (Zimme) in one map, and Kiang Mai in 
another. If the Laos language resembles Burmese in its orthography, which is 
likely, the correct transliteration is probably Khyeng Mai. 
