640 CLASS XVII. 



brown with black stripes, belly and legs white ; very shy, lives in troops 

 of 80 to 100 together; the Khoua Khoua of the Hottentots; Equus 

 Burchellii FISCH., Equus zebra BURCHELL, Equus festivus WAGN., Equus mon- 

 tanus F. Cuv., GRIFFITH, GEOFFR. SAINT-HILAIRE et F. CUVIER Mammif. 

 Livr. 55, 56, SCHREB. Saugth. Tab. 317 B, Diet. univ. d'Hist. nat., Mam- 

 mif. PI. 10, fig. 2; striped white and black like the zebra, but with white 

 legs ; BURCHELL has described this new species as the zebra, Travels in the 

 interior of Southern Africa, London, 1822, i. p. 139. The prolific copula- 

 tion of the zebra with the ass (Ann. du Mus. vn. p. 245, ix. p. 223) and 

 with the horse (ibid. XI. pp. 237 240) has been observed. On fossil horses 

 (Equus fossilis and Equus primigenius), compare MEYER, Nov. Act. Acad. 

 Cces. Leop. Car. XVI. p. 423 sqq. 



Phalanx III. Artiodactyla OWEN. Ungulates with number 

 of toes even. 



In the even-toed ungulates the number of the dorso-lumbar 

 vertebrae is constant (19) in all the species. The femur has not a 

 third trochanter. The fore part of the astragalus is divided into 

 two equal or subequal fagettes. The digit answering to the third 

 in the pentadactylous foot is not symmetrical, but forms with that 

 answering to the fourth a symmetrical pair. When there are horns, 

 they are never developed singly, but are placed on each side of the 

 median line in one pair or two. The crowns of the premolars are 

 smaller and less complex than those of the true molars. The 

 stomach is complex, the ccecum small, the colon spirally folded. 

 From OWEN On tJie characters, &c., Proceed, of Linn. Soc. 11. No. 5. 



pp. 28, 29. 



/ / -i -i 



Anoplotherium Cuv. Fossil genus. Incisors , canines - - 



77 ( 

 included, not longer than incisors, molars = = , all contiguous. 



All the species are found in the older tertiary strata. The AnoplotJierina 

 were divided by CUVIER into three genera, viz. Dichdbune. Xiphodon and 

 Anoplotherium, in stricter sense. Comp. Ann. du Mus. ill. et ix., Rech. s. 

 les Ossem. foss. in. Through the labours of later observers allied genera 

 have be ^n added to these, on which consult PICTET. 



Family XV. Suina. 



Sus L. Incisors various in number, in the lower jaw mostly 

 six, the upper sometimes none, in a few the lower deciduous also ; 



O o n rr 



canines in both jaws distinct, large ; molars ~ = - - . Feet 



o o 7 7 



with hoofs insistent, tetradactylous, posterior sometimes tridacty- 

 lous. Nose with snout truncate, mobile, prominent. Tail short or 

 a tubercle in place of tail. 



