34 Mamin. 
II. MAMMALIA. 
6. UNGTJLATA. 
A. — PROBOSCIDEA. 
a. Elephantida;. 
In describing the structure of the brain in the African Elephant, Bed- 
dard, P. Zool. Soc. London, 1893, pp. 178-218, gives reasons for 
disagreeing with some of the conclusions of Krueg, although he con- 
firms others. The outline of the brain is nearer to the Carnivorous 
than to the typical Ungulate type ; but the arrangement of the chief 
sulci appears to be on a plan peculiar to the family. 
After describing the structure and mode of development of the incisor 
and cheek-teoth of the Indian species, ROSE, Morphol. Arbeit, iii, 
pp. 173-194, comes to the conclusion that there is no evidence for 
homologising the first three of the latter with the milk-molars of the 
Mastodons ; while he further refuses to admit the serial homology 
of any individual tooth with the tooth of less specialized Mammals 
with which it has hitherto been regarded as corresponding. He adds 
that there is no apparent reason why the number of cheek-teeth 
developed in an Elephant should not be seven or eight, instead of six. 
j 'Elephas primigeniu •<*, its geological age, see Howorth, supra , p. 10, 
and Stirrup, supra, p. 20. 
f Elephas meridionalis , see Gaudry, supra , p. 9. 
f Elephas antiquus, skull described by Pohlig, vide supra , p. 17. 
f Dibelodon precursor, n. sp., Cope, Rep. Geol. Surv. Texas, 1892, p. 64, 
Tertiary, Texas. 
t Mastodon borsoni , see Donnezan, supra, p. 7. 
B. — tAMBLYPODA. 
b. fCoRYPHODONTIDiE. 
For restoration of the type genus, see Marsh, Amer. J. Sci. (3) xlvi, 
p. 321. 
C. — HYRACOIDEA. 
C. PrOCAVIIDjE. 
For observations on the dentition, see Lataste, supra, p. 11. 
Procavia neumanni , n. sp., Matsciiie, SB. Ges. naturf. Berlin, 1893, 
p. 112, Zanzibar ; on p. 228 of the same volume, a notice is given of 
the habits of one of the arboreal species. 
D. — tLITOPTERNA. 
d. -j-Maraucheniid^:. 
\Theosodon lydehkeri is considered by Amegiiino (Rev. Jard. Zool. B. 
Ayres, i, pp. 20-29) to belong to a separate family, allied to the 
