34 Mamm. 
MAMMALIA. 
Nehring, A. Ueber die Fortplanzung und Abstammung des Meersch- 
weinchens (Cavia cobaya , Marcgr.). Zool. Gart. xxxii, pp. 65-77. 
t Ortomyctera improba , n. sp., Ameghino, Rev. Arg. Hist. Nat. i, pp. 146 
& 14?, Hid . 
J i Eucardiodon, n. n., Ameghino, t. c. p. 247 ; to replace Cardiodon, 
Ameg., preoccupied. \E. affinis, n. sp., Ameghino, l. c., Tertiary, Parana. 
o. LeporiDjE. 
Burne, R. H. On the Variation and Development of the Leporine 
Sternum. P. Z. S. 1891, pp. 159-164, fig. 
After referring to the costal origin of the Mammalian sternum, the 
author enters into a detailed examination of that of the Leporulai. It is 
concluded that it originally consisted of eight sternebrae, but that the 
place of the seventh has been usurped by the ribs, which became 
detached and grew forward over the ventral surface. 
Lepus insularis, n. sp., Bryant, P. Ac. Calif, iii, p. 92, California. 
Lepus klahoensis, n. sp., Merriam, North American Fauna, No. 5 (supra, 
p. 13), p. 76, Idaho. 
6 . UNGULATA. 
A— +TILLODONTIA. 
a. fECTOGANIDAi. 
^ f 'Entocasmus heteroyenidens, n. g. & sp., Ameghino, Rev. Arg. Hist. 
Nat. i, p. 139, Tertiary, Patagonia. 
B. — +T0X0D0NTIA. 
b . j-PftOTYPOTHERIIDJ] (InTERATHERIIDjE) . 
• F. Amegiitno, Rev. Arg. Hist. Nat. i, pp. 393-397, figs., gives the chief 
characters of this family, showing that the teeth formed a continuous 
series, the terminal phalanges of the digits were expanded for a flattened 
nail, and the hallux and pollex were opposable. While allied to the 
Typotheriidce, it is considered that it is also related to the Primates (supra, 
P- 22). 
f Proty pother ium globosum , p. 291, f convexulens, f diversidens, fcom- 
pressidens, p. 292, Low. Tertiary (Eocene), Patagonia, Ameghino, Rev. 
Arg. Hist. Nat. i : n. spp. 
j -Patriarchus furculosus, p. 292, distort us, -\rectus , f diaslematus, f lepto- 
cephalus, t altus, p. 293, Low. Tertiary, Patagonia, Ameghino, Rev. Arg. 
Hist. Nat. i : n. spp. 
