On a new Genus and Species of Shrew. 243 
M. parva is regarded by Prof. Sars as identical with 
M. pygmea (Claus), but there are differences in the structure 
of the third and fifth feet of the male and of the fourth feet 
of the female which make such an identification doubtful. 
M. robertsoni, Brady *, is not a genuine species. Through 
the kindness of Prof. Meek I have been able to examine 
slides of this species made by Prof. Brady, and I find that 
they contain dissections of Canthocamptus pygmeus, Sars, and 
C. crassus, Sars. Brady’s figures of the male are apparently 
taken from the latter species, and those of the female from 
the former. 
The genus is one of littoral habit, and certain species are 
found in fresh water. JM. rapiens is commonly met with in 
water with but slight traces of salt, and I have myself taken 
it inland in perfectly fresh water t. J. detterst and M. pro- 
wazeki are apparently freshwater species, while MV. lilljeborgu 
is characteristic of brackish water of high salinity, and may 
even be found in rock-pools by the sea-shore. J. estuari, 
though so far only found in fresh water, will probably prove 
to be an estuarine species with a preference for high salinity. 
XXXII.—On a new Genus and Species of Shrew, and some 
new Muride from the Last-[ndian Archipelago. By 
OLDFIELD ‘l'HOMAS. 
(Published by permission of the Trustees of the British Museum.) 
In connection with the determination of some rats and shrews 
sent to me for naming by Dr. K. W. Dammerman, the 
Director of the Zoological Museum at Buitenzorg, I find that 
the following, some of which have been long in the British 
Museum collection, prove to need description as new :— 
CROSSOGALE, gen. nov. 
Nearly allied to Chimarrogale. 
Shape of skull comparatively normal, the brain-case not 
excessively broadened and flattened. Anterior incisors as 
broad terminally as proximally, the internal accessory notch 
and cusp much more developed, so that the two incisor-tips 
are some way apart. In Chimarrogale these teeth are sharply 
* Monog. of British Copepoda, ii. p. 64. 
+ Ann. & Mag. Nat. Hist. (9) v, 1920, p. 359. 
