List of the Mammals indigenous to Tasmania. 79 
There are at least four or five species ; but, with the exception 
of the Delphinus. Nove Zelandiea, Quoy et Gaim., I see 
none recorded in books as Tasmanian, although it is probable 
some of the Australian and New Zealand species are also 
found here. The materials at my command are, however, 
too imperfect to justify me in attempting to add them to 
this list. 
Ord. RODENTIA. 
4. Hydromys chrysogaster, GEOFFROY, Ann. du Mus., vi. 
Pe CleNtrdG, te wAL 
leucogaster, GEOFF., l. c. f. B. C. D. 
Sulvogaster, JOURD. 
Water Rat of the colonist. Inhabits the sea coasts and 
margins of estuaries ; aquatic, nocturnal. 
5. Mus setifer, HoRSFIELD, Zool. Java. t. —. GRay, Proc. 
Zool. Soc. u. p. 40. 
giganteus, Jav. TEMMINCK. 
This rat may be thus concisely described :-—“ Fur beni, 
_ plackish-brown beneath, especially the hinder part; grey 
back, with nearly erect rigid bristles; ears large, rounded, 
nearly naked ; tail long.” Specimens of this species from 
Van Diemen’s Land are in the British Museum. 
6. Mus penicillatus, GouLD, Ann. and Mag. Nat. History, 
vol. x. p. 405. Found also at Port Essington. 
A rat rather less than the Mus decumanus or Norway rat, 
distinguished from the others by the apical half of the 
tail being well clothed with black hairs. 
7%. Mus fuscipes, WATERHOUSE. Zoology of the Beagle. 
Mammalia pl. 66, t. 25. 
—— lutreola, Gray, appendix to Grey's Travels in 
N.W. Australia, 11. p. 409. 
Well figured in the Zoology of the Beagle as above quoted. 
