50 Mamm. 
MAMMALTA. 
8 . SIRENIA. 
Cope, E. D. The Extinct Sirenia. Am. Nat. xxiv, pp. 697-702, pis. xxv 
& xxvi, woodcuts. 
A review of the fossil forms referred to the order. 
Dollo, L. Premiere Note sur les Sirdniens de Boom. Bull. Soc. Belg. 
Gdol. iii, pp. 415-421, woodcut. 
Describes Sirenian remains from the Miocene of Boom, which are 
referred to the Ualitheriklce, with the undermentioned name : — 
\l t Miosiren hoclci , n. g. & sp., Dollo, t. c. p. 420, Miocene, Boom, Belgium. 
9 . EDENTATA. 
Orycteeopodid.®. 
Thomas, 0. A Milk-Dentition in Orycteropus. P. R. Soc. xlvii, pp. 
246-248, pi. viiio 
An extremely important paper, showing the presence of well-developed 
milk-teeth in the Aard-vark. Some observations on the affinities of the 
genus are given at the conclusion. 
10 . MAR SUPI ALIA. 
Leche, W. Zur Charakteristik der extra-uterinen Entwicklung der 
Beutelthiere. Biol. Foren. ii, pp. 112-116. 
Shows that the circular sucking mouth of young Marsupials is a 
secondary character developed after their transference to the maternal 
pouch, the uterine foetuses having long and well-developed lips. 
Parker, W. K. On the Skull of Tarsipes rostratus. Stud. Mus. 
Dundee, i, art. vii, 5 pp., 1 pi. 
The aberrant nature of the skull as compared with that of other 
members of the Phalangericlce is noticed in detail. 
Thompson, D’Arcy W. Note on the Yiscera of Tarsipes. T. c. art. viii, 
pp. 7-9, woodcuts. 
A figure of the stomach is given, this organ differing from that of 
other Marsupials in being bilocular. The liver and tongue are also 
described and figured. 
XI. MULTITUBERCULATA. 
Ameghino, F. Los Plagiaulacideos Argentinos, etc. Bol. Inst. Geogr. 
Argent, xi, pp. 143-201, woodcuts. 
The author describes (with figures) a number of Mammalian remains 
from the Tertiaries of Argentina and Patagonia, which are placed in the 
