Mamm. 17 
CARNIVORA, CREODONTA. 
Ursus liorrihilis : note on the young ; C. Dury, J. Ciucinn. Soc. iv. 
p. 68, pi. iii. 
Ursus spelccus : F. von Hochstetter, Denk. Ak. Wien, xliii. Abth. i. [nob 
seen by the Recorder ; cf. Zool. Anz. iv. p. 587]. 
Otariid.®. 
See E. L. Trouessart, supra, p. 9. 
TRICHECTDiE. 
Trichecus rosmarus. On its remains in Maine; C. H. Boyd, P. U. S. 
Nat. Mus. 1881, pp. 234, 235. 
PHOCIDJ5. 
Jlalichcerus gryphus. Note on its habits and bi’eeding; R. Collett, 
P. Z. S. 1881, pp. 380-387. 
Macrorrhinus leoninus. Notes on its characters; W. H. Flower, P. Z. S. 
1881, pp. 145-162. 
'^Amphicynodon^ g. n. (foss.) ; H. Filhol, Ann. Sc. G(^ol. xii. p. 39, 
figs. 23-31, & 42-47. Type, “ Cynodon^' palustris. 
\fProplesictis aiymardi, g. & sp. nn. (foss.), id. ibid. fig. 48, Miocene of 
Ronzon. 
^ Hymnodon aymardiy sp. n. (foss.), id. 1. c. p. 48, fig. 22 bis, Miocene 
of Ronzon. 
CREODONTA. 
Cope, E. D. On the Genera of the Creodonta. P. Am. Phil. Soc. xix. 
pp. 76-82. 
Five families and 13 genera are recognized, 2 families (Miacidoe, Meso- 
mychidce) and 2 genera {Eyodectes [type, Arctocyon gervaisi, Lemoine] 
and Heterohorus [type A. duelii., Lemoine]) being here named as new. 
Their relationships to the existing Carnivora^ and to other groups, are 
discussed. 
The same author adopts the following families: — Arctocyonidm^ 
Miacidce, Lejytictidce, Oxyamidai^ Amhlyctonida}, Mesonychidce, as an im- 
proved arrangement as compared with that given above ; P. Am. Phil. 
Soc. 1881, pp. 156-158. The following genera are included : — 
Arctocyonidcs. — Arctocyon^ Hyodectes, Heterohorus. 
Miacidce. — Miacis, Didymictis. 
LeptictidcB. — Mesodectes, Ictops, Leptictis, Peratherium^ Diacodon, Lipo- 
dectes, Triisodon, Deltatherium, Quercitherium^ Stypolophus^ Provi- 
verra, 
Oxyomidoi. — Pterodon, Protopsalis, Oxycena. 
Amhlyctonidm. — Amhly clonus, Periptychus, Palceonictis. 
Mesonychidce. — Mesonyx, Dissacus, Sarcothraustes, Patriofelis. 
In describing a new genus (Triisodon, vide infra') of this group 
(Am. Nat. xv. pp. 667-669), Cope considei’s that the tooth replacing the 
1881. [vOL. XVJII.] B 2 
