UNGULATA. 
Mamm. 39 
Perissodactyla. 
Equidae, evolution, Matthew, Amer. Mus. J. iii, suppl. ; callosities of, 
Lydekker, P. Zool. Soc. London 1903, i, p. 199. 
Equus burchelli and caballus, hybrid, W. L. Sclater, P. Zool. Soc. London 
1903, i, p. 1, fig. 1 ; przewalskii a race of caballus, Noack, Zool. Anz. 
xxvi, p. 369; quagga, coloration, Pocock, Nature lxviii, p. 356; 
caballus, thoroughbred strain derived from grevyi, Ridgeway, P. Cam- 
bridge Soc. cxi, p. 141 ; hagenbecki , west of Kobdo, Matschie, 
Naturw. Wochenschr. (2) ii, p. 583, n. sp. ; caballus, vestiges of 
face-gland cavity in eastern forms and descent of latter from sivalensis 
and relation of przewalskii to Kathiawar breed, Lydekker, Field cii, 
p. 957 ; boehmi, note on, Noack, Zool. Anz. xxvii, p. 76 ; caballus, 
Prehistoric, Munro, P. Phys. Soc. Edinb. 1903, p. 70; rudimentary 
horns in, Eustace, J. Linn. Soc. 1903, p. 48 ; supernumerary molars 
in, Bradley, Anat. Anz. xxiv, p. 112; miscellaneous notes, Hayes 
(142); burchelli, figured, Pocock, P. Zool. Soc. London 1903, ii, p. 196. 
\Protohippus from Russia, Pavlow, Bull. Soc. Moscou 1903, p. 173. 
t Ncohipparion, n. g. for N. whitneyi, Miocene, S. Dakota, n. sp., Gidley, 
Bull. Amer. Mus. xix, p. 467 ; all the American Hipparions are 
referred by the author to the same genus. 
+ Anchitherium zitteli, Tertiary, China, Schlosser, Abh. Bayer. Ak. xxii, 
i, p. 76, n. sp. 
+ Anchilophus desmaresti, brain, Weinberg, Zeitschr. wiss. Zool. lxxiv, 
p. 491. 
Tapirella , n. nom. for Elasmognathus Gill, 1865, nec Fieber, 1844, 
Palmer, Science (2) xvii, p. 873. 
\Hyrachyus{T) prisons, Tertiary, Montana, Douglass, Ann. Carnegie Mus. 
ii, p. 156, n. sp. 
AMesohippus latidens, Ibid. Douglass, t. c. p. 161, n. sp. 
■\Aphelops (?) ceratorhinus , Ibid. Douglass, t. c. p. 195, n. sp. 
Rhinoceros simus , photographs, Newton, P. Zool. Soc. London 1903, i, 
p. 222 ; horn, Sclater, ibid, ii, p. 194 ; t brancoi [brand], Tertiary, 
China, Schlosser, Abh. Bayer. Ak. xxii, i, p. 64, n. sp. ; German 
later Tertiary species, Schroeder, Abh. Preuss. geol. Landesanst. 
xviii, p. 1 ; + etruscus from Perugia, Bortolotti, Riv. ital. Pal. ix, 
p. 50 ; sp. from Spain, Miguel, Bol. Soc. espan. iii, p. 361. 
+ Ronzotherium reichenaui, Oligocene, Alzey, Deninger, Zeitschr. Deutsch. 
geol. Ges. lv, p. 93, n. sp. 
HyRACOIDEA and fCoNDYLARTHRA. 
Carpus and tarsus of Hyracoidea a very primitive type, and show as much 
resemblance to those of Rodents as to those of Ungulates ; hence 
the group has been derived from forms in which these two types were 
united, perhaps the Toxodontia, or, more probably the Tillodontia, 
Fischer, Jena. Zeitschr. xxxvii, p. 691 ; dentition, Adloff, Zeitschr. 
Morphol. vi, p. 181 ; alimentary canal, Lonsky, Jena. Zeitschr 
xxxvii, p. 579. 
t Meqalohyrax, n. g. for M. eoccenus, Eocene, Fayum, Egypt, n. sp., 
Andrews, Geol. Mag. (4) x, p. 340. 
t Arsinotherium zitteli, figured, Anon., t. c. p. 529. 
