SPECIAL WORK. 
Mamm . 35 
Mayet, V. Le Castor du Rhone. C.R. Congres Internat. Zool. 1889, 
pp. 58-63. 
Considers that from 25 to 30 Beavers are killed annually in the Rhone 
basin. 
Castor fiber , E. L. Mitford, Zool. (3) xvi, pp. 177 & 178, refers to a 
specimen from the Rhone. 
t Trogontherium minus, n. sp., E. T. Newton, Q. J. Geol. Soc. xlvi, pp. 
447 & 448, pi. xviii, figs. 5 & 6, Red Crag, 
t Steneofiber jcegeri , see Hofmann, suprd , p. 7. 
iStencofiber minimus , n. sp., Filiiol, Bibl. haut. dtudes, xxxvi, 1, p. 45, 
Miocene, Sansan. 
c. Myoxidjj. 
Reuvens, C. L. Die Myoxidce oder Schlafer. — Ein Beitrag ,zur Osteo- 
logie und Systematik der Nagethiere. Leyden : 1890, 4to, pp. 1-80, 
pis. i-iv. 
This memoir, illustrated with figures of skulls and dentition, is a 
detailed treatise on the external characters, dentition, and cranial osteo- 
logy of the Dormice. The author concludes that Eliomys , Graphiurus , 
Muscardinus , and Bifa should be regarded merely as subgenera of 
Myoxus, although the species are quoted under these several names. A 
detailed synopsis is given of all the species, 1 new species of Eliomys 
being described. 
Eliomys kelleni , n. sp., Reuvens, t. c. p. 35, W. Africa. 
d . Murids. 
For figures and descriptions of the M.uridce of S. America, see Milne- 
Edwards, supra, p. 10. 
Mahn, R. Bau und Entwicklung der Molaren bei Mus und Arvicola. 
Morph. JB. xvi, pp. 652-685, pi. xxv. 
Shows the gradual acquisition of the complex characters of the adult 
molars of Arvicola in the teeth-germs, and compares this with the simpler 
teeth of Mus. 
Newton, E. T. On the occurrence of Lemmings and other Rodents in 
the Brick-Earth of the Thames Valley. Geol. Mag. (3) vii, pp. 452- 
455, woodcut. 
Records remains of Arvicola amphibius, A. ratticeps, Cuniculus torquatus, 
and Myodcs lemmus. 
Sclater, W. L. Notes on some Indian Rats and Mice. P. Z. S. 1890, 
pp. 522-539, pis. xliv & xlv. 
This paper has notes on all the Indian species of Muridce represented in 
the collection of the Indian Museum, Calcutta, and is illustrated with 
figures of skulls and teeth of several species. It is considered that Nesocia 
brachyura , Buchner, is probably identical with N. scullyi, Wood-Mason. 
