MAESUi’IALIA. MONOTKEMATA. 
Mamrn: 39 
Macro podium. 
^W. H. Flower, Encycl. Brit. (9) xiii. [1881], pp. 838-841, figs. 1-4, 
Article “ Kangaroo,” has given a full account of this family. The follow- 
ing is his arrangement : — 
Sect. I. Macropodincc. 
Genera, Macropus , Dendrolagus , Dorcopsis. 
Sect. ii. Ilypsiprymnincs . 
Genera, Ilypsiprymnus , Bettongia. JEpyprymnus , Ilypsiprymnodon. 
The characters of the genera and many of the species are given in 
detail, and there is a short account of the fossil forms. 
^ Greene, W. T. The Kangaroo. Sci. Goss, xviii. pp. 3 & 27. 
A popular account of the family. 
llalmaturus bennetti. On its female reproductive organs ; G. Qattaneo, 
Atti Soc. Ital. xxiv. [See Zool. Anz. v. p. 511.] 
Plagiaulacid;e. 
Thylacoleo. On its ancestry and habits ; E. D. Cope, Am. Nat. xvi. 
p. 520. This animal should be placed in the present family, and is nearly 
allied to the American Catopsalis and Ptilodus , the latter of which has a 
somewhat similar dentition. These animals are related to the Macropo- 
didce, through a supposititious ancestor here named Trilomodon. A 
synopsis of the genera is given. 
Ncoplagiaulax eoccenus and marshi, g. &. spp. nn. (foss.), Lemoine, 
C. R. xcv. p. 1009, Reims. Allied to Plagiaulax and Ctenacodon. 
Ptilodus trovessartianus, sp. n. (foss.),E. D. Cope, Am. Nat. xvi. p. 686, 
New Mexico. 
Polymastodon taoensis , g. & sp. n. (foss.), id. 1. c. p. 684, Eocene of New 
Mexico. Allied to Ptilodus and Catopsalis. 
Catopsalis foliatus, g. & sp. nn. (foss.), id. 1. c. p. 416,Puerco Beds of 
N. W. New Mexico. C. pollux , sp. n. (foss.), id. tom. cit. p. 685, New 
Mexico. 
Meniscoessus conquistus , g. & sp. nn. (foss.), id. 1. c. p. 830, “ Laramie 
Beds.” 
MONOTKEMATA. 
Ornithorrhynchidje. 
^ Ornithorrhynchus paradoxus. On its heart ; E. Ray Lankester, P. Z. S. 
1882, p. 549, pis. xxxviii.-xli. The septal Hap of the right auriculo-ven- 
tricular valvo is nearly or quite absent, and there is no fossa ovalis, 
although it is usually described as present. 
