PA ryOLE SON THES FAUNA OF: BA RBSs 
MATIN; HI. WESTERN BENGAL. 
By N. ANNANDALE, D.Sc., F.A.S.B., Superintendent, Indian 
Museum. 
Parésnath Hill, the highest mountain in Bengal apart from the 
Himalayas, is situated in the district of Hazaribagh (Chota 
Nagpur) and is separated from the foot-hills of Nepal by a dis- 
tance of about 180 miles in which the whole width of the Ganges 
valley is included. Isolated to a considerable extent from the 
other, lower hills and ridges of the district, the mountain rises 
to a height of 4,800 feet above sea-level. Its flanks and crest 
are covered with dense jungle which periodical forest fires prevent 
from reaching any great height, and its atmosphere though 
damper (at any rate near the summit) than the atmosphere of the 
surrounding country owing to the clouds which it attracts, does 
not possess the humidity of that of the Eastern Himalayas, resem- 
bling rather that of the slopes below Naini Tal in Kumaon. 
The fauna of Parésnath has hitherto received little attention, 
although Blanford and Stoliczka collected molluscs, crustacea 
and lizards upon it many years ago. The following notes are 
based mainly on collections made by Dr. J. Travis Jenkins and 
myself in April and May, 1900. 
L—AEVST.] OR. SPECIES, IDENTIFIED: 
(The names of the spectes as yet known only from Parésnath 
\ 
are marked with a *.) 
MOLLUSCS. 
The land molluscs of Parésnath exhibit a tendency to form 
separate species and races such as usually occur in isolated areas 
of a mountainous nature. 
Family ZONITIDAE. 
1. Aviophanta interrupta (Bs.) subsp. sacra., nov. 
Blanford and Godwin-Austen, Fauna Brit. Ind.—MolL., i, p. 31. 
As is pointed out by the authors cited, Parésnath shells of 
this species represent a local race distinguished from the typical 
