30 Mamm. 
MAMMALIA. 
b . Myoxime. 
Gunther, A. Die Gartenschlafer, Myoxus quercinus , im Rheinthale. 
Zool. Gart. xxxii, pp. 82 & 83. 
Noll, F. G. Die Gartenschlafer ( Myoxus nitela , Schrbr., = Eliomys 
quercinus , Linn.) in Rheinthale bei St. Goar. T. c, pp. 7-12. 
Reuvens, C. L. Einiger iiber die Myoxidce , oder Schlafer. Notes Leyd. 
Mus.xiii, pp. 65-76, pi. v. 
Supplemental notes to the memoir quoted in Zool. Rec. xxvii, Mamm. 
p. 35, with figure of the type of Eliomys kelleni. 
C. CASTORIDA2. 
Lydekker, R. The Present Distribution of the Beaver. Field, lxxvii, 
p. 9. 
Newton, E. T. Ou a Skull of Trogontherium cuvieri from the Forest- 
bed of East Runton, near Cromer. P. Z. S. 1891, pp. 247 & 248 
(Abstract). 
The skull described admits of defining the generic distinctions between 
Castor and Trogontherium ; Conodontes, of the French Pliocene, is identi- 
fied with the latter. 
d . Muridas. 
Allen, J. A. Descriptions of Two supposed New Species of Mice from 
Costa Rica and Mexico, with remarks on Hesperomys melanophrys of 
Coues. P. U. S. Nat. Mus. xiv, pp. 193-196 (vide infra). 
Clarke, W. E., & Barrett-Hamilton, E. H. On the Identity and 
Distribution of the Irish Rat (Mus hibernicus, Thompson). Zool. (3) 
xy, pp. 1-9, figs. 
It is concluded that this Rat is a melanistic form of M. decumanus. 
Somerville, J, T. Notes on the Lemming (Myodes lorquutus). P, Z. S. 
1891, pp. 655-658. 
Observations on the migratory habits of these animals. 
Otomys jacksoni , n. sp., Thomas, Ann. N. H. (6) vii, p. 2, and P. Z. S. 
1891, pp. 184 & 185, pi. xv, Mt. Elgon, East Africa. 
Onychomys leucoyaster , n. var. brevicaudus, Merriam, North American 
Fauna (supra, p. 13), No. 5, p. 52, Idaho. 
Hesperomys crin.it us, n. sp., Merriam, t. c. p. 53, ibid. 
Hesperomys ( Vesperimus) cherrii , n. sp., J. A. Allen, Bull. Am. Mus. 
Nat. Hist, iii, pp. 211-213, Costa Rica, 
Hesperomys (Vesperimus ?) nudipes , n. sp., J. A. Allen, t. c. pp. 213 & 
214, ibid ; -= Vesperimus nudipes , t. c. p. 297. 
