38 Mamm. 11. mammalia. 
Equus caballus : Ewart, supra, p. 7, shows that in the foetus there are 
vestiges of the second and fourth digits, which never ossify. 
Equus zebra, q^iagga, burchelli , chapmanni, antiquorum, boehmi , and grevyi , 
are recoghized by Matschie, supra, p. 13, as distinct species, and 
their characters and distribution given. 
f Mesohippus longipes , n. sp., Osborn & Worth an, Bull. Amer. Mus. vi, 
p. 214, Miocene, White River. 
7. Rhinocerotidjj. 
Rhinoceros simus, figured, with notes on its occurrence in Mashonaland, 
Coryndon, P. Zool. Soc. London, 1894, p. 329, pi. xviii. 
Rhinoceros sondaicus and R. sumatrensis, Jentink, Notes Leyden Mus. 
xvi, p. 231, doubts whether the former occurs in Sumatra and 
Borneo, and the latter in Java. 
iAceratherium trigonodum, p. 201, platycephalum, p. 206, n. spp., Osborn 
& Wortman, Bull. Amer. Mus. vi, Miocene, White River. 
t Amynodon : skeleton described by Osborn & Wortman, op . cit. p. 208. 
iTeleoceros, n. g., major , n. sp., Hatcher, Amer. Geol. xiii, p. 149, and 
Amer. Natural, xxviii, p. 241, Loup Fork Beds, Nebraska. Distin- 
guished from other American Rhinoceroses by the presence of a 
median horn. 
vn. ARTIODAOTYLA. 
Cameron, Zoologist (3) xviii, pp. 241-252, & 281-292, discusses the 
origin and object of the cranial appendages of the Pecora, and 
concludes that they are for purposes of defence against carnivores, 
being generally harmless against individuals of the same species as 
their owners. 
8. Bovtdjs. 
Sclater & Thomas (Book of Antelopes) commence their illustrated 
description of all the species of Antelopes. Bos, parietal, Biancii I, 
supra, p. 5 ; Algerian Pleistocene species, Pom el, supra, p. 16 ; 
Bos taurus, interparietal, Maggi, supra , p. 12 ; B. bison ? its distribu- 
tion, Langkavel, supra, p. 10. 
Bos moellendorffi, n. sp., Neiiring, SB. Ges. naturf. Berlin, 1894, p. 185, 
Philippines. Bos ( Bubalus ) mindorensis, suggested by Jentink, 
Notes Leyden Mus., supra , p. 10, to be a cross between the buffalo 
and the anoa. 
Oois aries and Capra hircus, for the origin of the domesticated races and 
their classification, see Glur, Mt. Ges. Bern, 1894, pp. 1-56. For 
supplemental horns, see Kerville, p. 10, and Lataste, supra, p. 11. 
Ovis montana, Liebenwalde, supra , p. 11. 
Haploceros montanus ( lanigerus ), Liebenwalde, loc. cit . 
