eodentia. 
Mamm. 37 
Castoroidiile. 
Castoroides ohioensis. On an incisor tooth found in Darke County, 
Ohio ; F. W. Langdon, J. Cincinn. Soc. vi. p. 238. 
MyOXIDvE. 
Myoxus glis. On its occurrence near Osnabiuck; F. Sickmann, JB. 
Ver. Osnabr. v. p. 9-1. 
Murids. 
Deleporte-Bayart, — . Notes sur une invasion de souris, mulots et 
campagnols dans les campagnes du Nord de la France. Lille : 1883, 
8vo. (See ZooL Anz. vi. p. 547.) 
s l Lataste, F. Note sur les souris d’Algerm, et description d’une espece 
nouvelle. Act. Soc. L. Bord. (4) vii. pp. 13-33. 
The author gives full descriptions, with figures of the skulls of the 
Algerian species of mice, and a synopsis of all the Western Palsearctio 
species both of rats and mice. One species is described as new (see 
infra). 
. Introduction a l’etude des campagnols de France. Le Nat. ii. 
1883, pp. 323, 332, 343 & 347. 
In this paper, the bibliography of the Arvicolincu is fully traced out, 
and the genera and subgenera of the group are arranged and defined. 
The author considers that the system of Blasius, which is founded on 
the structure of the molars, is radically wrong, and that the subgenera 
of Arvicola should rather be based upon the number of mammae and 
foot-pads. The nomenclature of this group is carefully reviewed, and 
some rather remarkable results arrived at. 
^Poliakoff, — . Revue systematique des campagnols de Siberie (M&n. 
P6torsb. xxix., annexe). Analyse avec annotations critiques, par 
F. Lataste. Ann. Mus. Genov, xx. pp. 253-301. 
The present is a French summary, by F. Lataste, of a paper published 
in Russian in 1881. Poliakoff describes 1G Siberian species of Arvicola , 
of which 6 are new, and enters fully into their distribution, dental 
characters, &c. ; and Lataste, in a series of footnotes, makes remarks upon 
that author’s methods and results, showing that most or all of his so- 
called new species are merely varieties of old ones. 
^Euryotis anchietce ) sp. n., J. Y. Barboza du Bocage, J. Sci. Lisb. ix. p. 26, 
Caconda, Angola. 
Mus. A Maori rat near Greymouth, New Zealand ; R. Helms, N. Z. J. 
Sci. i. p. 466. [Probably, from the description, a specimen of Mus 
rattus , L.] 
Mus dccumanus and rattus. On their distribution in Brazil ; A. Neh- 
ring, SB. nat. Fr. 1883, p. 49. 
