SIWALIK AND NARBADA CARNIVORA. 
157—334 
7. Macherodus necator, 1 Gerv. Pleistocene, 2 S. America. 
Smilodon necator, Cope. 
A large species, distinguished by the absence of pm. 3, the complex character of the 
talons of pmTi, and the large descending symphysial expansion. 
8. Macioerodus neog/eus 3 (Lund). Pleistocene, 
S. America. 
Felts smilodon, Blain. 
Hyaena neogcea, Lund . 
Meganlhereon neogceus, Pomel. 
Smilodon neogceus, Cope. 
,, populalor, Lund. 
A species as large- as a tiger, distinguished by the huge size 
of the canines (fig. 17) ; the large size and complexity of 
pm- 4 and pLiTJ ; the small size and single fang of pm. 3 ; 
and the comparatively small descending symphysial ex- 
pansion : the tubercle of pm. 4 is distinct. , Fig- 17. Machcerodus ncoyceus (Lund) : 
cranium, much reduced. 
9. Macilzerodus palmidens 4 (Blain). Mid. miocene, Europe. 
Drepanodon palmidens, Cope. Felis palmidens, Blain. 
Meganlhereon palmidens, Pom. 
A small species, about equal in size to the cheetah ( Cynoelurus ) : canines small ; lower 
premolars with large fore-and-aft talons. 
As doubtful or insufficiently determined species tliere may be mentioned M. 
ogygius (Kaup)=A< 2 As ogygia , Kaup, and F. antiqua , Blain., in parte {teste Pomel) : 
and M. maritimus, Gerv. , mentioned by Prof. Cope. 5 M. perarmatus , Gerv.,=M. 
bidentatus, is the same as Eusmilus : while M. brachyops, Cope, M. cerebralis , Cope, M. 
occidentalism Leidy, M. primcevus , Leidy, and M. strigidens, Cope, constitute the genus 
Iloplophoneus. M. f Meganthereon) hycenoides , Pom., is a Pseudcelurus-. 
Species 1 : Macilerodus sivalensis (Falc. and Caut.). 
Synonyms. Drepanodon sivalensis , Falc. and Caut. Meganthereon falconeri , Pomel. 
Machcerodus falconeri , Gaudry . 
History of Siwalik machcerodonts . — Apparently the earliest mention of the 
occurrence of a species of Machcerodus in the Siwaliks is in Prof. Owen’s 
“ Odontography ” 6 (published from 1840 to 1845), where the fact is simply recorded. 
The next notice occurs in the “ British Fossil Mammals and Birds” 7 (1846) ; where 
some of the teeth are described; but no specific name is assigned. In 1853 Pomel 8 
assigned the name Meganthereon falconeri to certain remains of a Siwalik Machcerodus * ; 
1 Cope, ‘ Amer. Nat.,’ vol. XIV., p. 855, figs. 12, 13, 14. 
2 It appears preferable to class the S. American drift and cavern deposits as pleistocene, rather than with Prof. Cope, as 
pliocene. The former view is adopted by Prof. J. Le Conte (“ Elements of Geology,” New York, 1879, p. 544). 
3 Blainville, “ Osteographie,” Genus Felis, pi. XX. 6 P. 491. 
4 Ibid, pi. XVII. 7 Pp. 178-9. 
3 Op . cit., p. 853. 8 “ Cat. Meth. Vert. Foss.,” etc., p. 56. 
9 The specimens are stated to he in the collection of the Geological Society of London ; hut this is probably erroneous. 
M 2 
