40 Mamm. 
MAMMALIA. 
Luciisinger, B. Zur Theorie des Wiederkauens. MT. Ges. Bern, 
1883, p. 13. 
A short note on the physiology of the act of rumination. 
^ Lydekker, It. Siwalik Selenodont Suina, &c. Pal. Ind. (10) ii. pt. v. 
pp. 1 42-170, pis. xxiii.-xxv. 
In the present memoir the following arrangement of the Artiodactyles 
is suggested : — 
I. Suina. 
a. Bunodonta. 
1. Suidce. Sue, Porcula , Babirusa , Hippohyus (?), 
Sanitherium , A mphichcerus, lleterohyus , Chcaro- 
morus , Potamochcerus , Palceochcerus. 
2. Dicotyliclce. Dicotyles, Uyotherium (?), Thinohyus, 
Platygonus. 
3. Acotherulidce. Acotherulum , Leptacotherulum. 
4. Phacochceridce. Phacochcerus. 
5. Entelodontidce. Entelodon, Tetraconodon , Aclioenodon. 
6. Ilippopo tamidce . Hippopotamus , Chosropsis, Lepto- 
choeruSj Parahyus, Eohyus , Helohyus. 
b. Selenodonta. 
a. Pentecuspidati. 
1. Anthr acotheriidce. Anthracotherium , Ilyopotamus, 
Rhagatherium, Chceropotamus , Hemichcems. 
(?) 2. Mixtotheriodontidce. Mixtotherium. 
(?) 3. Diplop[-od-]idce. Diplopus. 
b. Tetracuspidati. 
1. Merycopotamulcs. Menycopotamus, Chceromeryx , 
Ilemimeryx . Sivamenyx. 
2. Oreodontulce. Oreodon , Eporeodon, Agriochcerus, 
Merycochcerus. 
c. Anoplotherina. 
1. Anoplotheriidce. Anoplotherium, Eurytherium , &c. 
II. P achy simia [with Cebochoeridce (Cebockcerus)']. Connected with the 
Bunodont Suina. 
III. Ruminantla. Connected with the Selenodont Suina. 
The Siwalik genera belonging to the Selenodont Suina are then fully 
worked out and described, many of the fossils being figured. 3 new species 
are described [see Anthracotherium hyopotamoides , Hyopotamus gigan- 
teus {Anthr acotheriidce), Propalceomeryx sivalensis ( Palieomerycidce )], 
and many names, published already with short diagnoses, are confirmed 
by proper descriptions and figures. [See also Ann. N. H. (5) xii. 
p. 274.] 
^ Osborn, H. F. On Achcenodon, an Eocene Bunodont. Contr. E. M. 
Mus. Geol. Princeton, No. 3. p. 23. 
[Not seen by Recorder ; cf. Zool. Anz. vii, p. 153.] 
