205 
REPORT ON THE NON-OPERCULATE LAND 
MOLLUSCA 
By WALTER E. COLLINGE, M.Sc. 
THE UNIVERSITY, BIRMINGHAM 
T he collection of Non-Operculate Land Molluscs made by Messrs. 
Annandale and Robinson during 1901 and 1902 in the Malay 
Peninsula, and which has been placed in my hands for identification 
and description, is not a large one, and many of the species I have dealt with 
in my account of the Non-Operculate Land and Freshwater Molluscs collected 
by the members of the ‘ Skeat ’ Expedition in 1899 and 19CO.' There are, 
however, a few species which were not obtained on this expedition, and these 
are of particular interest. 
Firstly, I would mention the occurrence of a new species of Damayantia^ 
IssEL, which genus has not hitherto been recorded from elsewhere than Borneo ; 
its distribution is thus extended considerably westward. A new species of 
Parmarion^ P. Fisch., is described from Bukit Besar, while an example of 
Helicarion lowi^ De Morgan, enables me to give some account of the anatomy, 
from which it will be seen that it can no longer be retained in that genus, but 
finds a more natural position in the genus Nilgiria^ Godw.-Aust. Finally, a 
new species of Atopos^ Simr., offers an opportunity of further adding to our 
knowledge of the anatomy of this most interesting genus, though there yet 
remain many gaps. 
In all, the collection comprises representatives of twenty-three species, 
which are contained in seventeen genera ; of these, five species are new. 
My best thanks are here tendered to the Council of the Birmingham Natural 
History and Philosophical Society for a grant towards the cost of the figures 
illustrating this work. 
. Journ. of Malac. 1902, vol. ix, pp. 71-95, pis. iv-vi. 
