109 
1872.] 
Monograph of Himalayan, Assamese, Barmebe and Cingalese Clau- 
silias, — by William T. Blanford, F. G. S., C. M. Z. S., Ac. 
(With Plato IX.) 
[Received 19th January, read 2nd February, 1872.] 
Not a single species of Clausilia has hitherto been found in India proper, 
South of the Himalayas, not even in the semi-Malay fauna of the Malabar 
coast, although one kind occurs in Ceylon* The few forms hitherto 
described from the territories belonging to the British Indian Empire are 
from the mountains to the north, or from the countries to the eastward. 
Several of those described are rare and local, and some are from places very 
difficult of access. . 
By the kindness of my friends, Major God win- Austen, Mr. .Theobald, 
Dr. Stoliczka, and Mr. G. Nevill, I have been furnished with specimens of 
all the species not in my own collection, hitherto described from British 
Barma, Assam, the Himalayas and Ceylon, except Clausilia vespa, Gould, 
C. insignis, Gould, and O. bulbus, Benson. I have copied authentic figures 
of the last two, and I add a representation of a shell from Moulmein which 
may possibly be a variety of C. vespa. 
I am unable, without access to a greater number of types, to assign all 
the Himalayan and Burmese Clausilia to the proper sub-genera. Those to 
which the known species hitherto been referred do not always appear to me 
to include them. Thus C. insignis, Gould, C. Philippiana, Pfr., and 
C. cylindrica, Gray, have all been classed in Phcedusa, to which I am in- 
clined to doubt if any except the first really belong. I have classed the 
species in natural sections, and I have given the most conspicuous characters 
of each group ; and in one case only I have proposed a new sectional or 
sub-generic name. 
Section I.— Shell homy, smooth, elongate ; the apical portion decidu- 
ous ; lunule rudimentary or wanting, palatal plicae few, the uppermost 
elongate. 
l.f Clausilia cylindrica, Gray. 
Pfeiffer, Symbol. Ill, p. 93. Mon. Hell. II, p. 428 III, p 590 IY, p. 725 
VI, p. 412. Kiistor, Mart, and Chemn., PI. XI, f. 12—16. Hanley and Theobald, 
Conchologia Indica, PI. XXIV, f. 4.J 
* But a single species C. Jennaarensis, Pfr. , has hitherto been obtained in the 
Ethiopian region. The genus is fonnd throughout the temperate portion of the 
polmarctic region, in the Malay (or Indo-Malay) province, and in part of the neotro- 
pical region. 
■[ The figures in PI. IX correspond in their numbers with the species, thus : 
1, C. cylind/rica, is fig. 1. 2, 0. Ios, fig. 2, &c. 
j The full synonomy being given in Pfeiffer’s Monograph, I do not repeat it, 
but only add references to figures. 
