4 Mamm. 
MAMMALIA. 1 
13. [Allen, H.] On the Types of Tooth-Structure in Mammalia. 
T. c. pp. 295 & 296. 
Notes on the arrangement of the cusps of the molars in different 
Mammals. 
14. . Muscles of the Hind Limbs of Cheiromeles torquatus. Science, 
vii, p. 506. 
15. . On a Post- tympanic Ossicle in Ursus. P. Ac. Philad. 1886, 
p. 36. 
16. Allen, H. T. Ruminants of the Copper River Region, Alaska. 
Science, vii, p. 57. 
Notes on the Deer ( Alces machlis and Rangifer tarandus) and the 
Bighorns ( Ovis canadensis dalli ? and Mazama montana) found in this 
region. 
17. Ameghino, F. Oracanthus y Ccelodon, generos distintos de una 
misma familia. Bol. Ac. Arg. viii, pp. 394-398. 
Note on the question of the identity of the two genera above-men- 
tioned, asserted by Burmeister, denied by the author. [See Bol. Ac. Arg. 
vii, p. 499.] 
18. . Contribuciones al conocimiento de los Mamfferos fdsiles 
de los terrenos terciarios antiguos del Parand. Bol. Ac. Arg. ix, 
pp. 3-226. 
Descriptions of a very large number of fossil Mammals from the 
Argentine, the new species belonging to the following genera : — Epiblema } 
Tetrastylus , Plexochcerus , Anchimys , Stenotephanus, Tomodus , Nephothe- 
rium , Comaphorus , Proeuphractus , and Strata , which are all new, and to 
Canis , Megamys, Lagostomus, Morenia , Or thorny s, Toxodon , Ilaplodon- 
therium, Dibolodon , Scalabrintherium, Promegatherium, Pseudolestodon , and 
Chlamydotherium , which are genera already described. Altogether, 22 
new species are described and 11 new genera. 
19. . Oracanthus und Ccelodon , verschiedene Gattungen einer und der- 
selben Familie. SB. Ak. Berlin, 1886, pp. 463-466. 
Contests Burmeister’s view (SB. Ak. Berlin, 1885, p. 567) that these 
two forms are identical. 
20. Anderson, R. J. On the so-called Pelvisternum of certain Verte- 
brates. P. Z. S. 1886, pp. 163-165. 
21. Aurivillius, C. W. S. Osteologie und aussere Erscheinung des 
Wals Sowerby’s ( Micropteron bidens [Sow.]). Bih. Sv. Ak. Handl. xi, 
No. 10, pp. 1-40, taf. i & ii. 
Description of a specimen of this rare Whale caught on the coast of 
Sweden. 
22. Ayres, W. O. Carnivorous Prairie Dogs. — Carnivorous Oriole 
Science, viii, p. 105. 
