267—90 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
cusp, 1 wliicli is wanting in most species of Viverra? Another important point 
is that all species of Genetta are small sized. 
It may not be out of place to observe that the teeth of Paradoxurus closely 
approach those of some species of Viverra , but are in general distinguished by 
the shorter form of pm. 4 , the presence of an inner cusp to pm. 3 , and the more 
quadrangular form of m. 1 ; the skull is also shorter and wider, and the auditory 
bulla more pointed anteriorly. In Herpestes , which has also teeth of a similar 
type, there is an inner cusp to pm. 3 , and the bulla is mesially contracted. In 
respect of the large development of the inner tubercle of pm. 4 , and the large 
talon and inner cusp of m. 1, the teeth of Viverra and G enettco must probably be 
regarded as being of a lower type than those of Oanis ; although the suppression 
of m. 3 is an advance on that genus. A considerable advance is indicated in the 
fossil genus Ictitherium , in which the minute anterior cusp existing in pm. 4 of 
Viverra has developed into a distinct additional lobe to the blade ; while in m. i 
the talon and inner cusp have considerably diminished ; these two teeth being in fact 
about intermediate between those of Viverra 'and the less specialized forms of 
Ilycena. Ictitherium retains, however, m. 2, which is never found in any species of 
Ilycena ; although m. 2, in a smaller form, is present in some species of the latter. 
There is a tendency to the suppression of m. 2 exhibited by the small size to which 
that tooth is reduced in some species of Ictitherium ? 
Genus I. : VIVERRA, Linn A 
Number of species . — According to Professor Mivart, 4 the existing species of 
Viverra proper are form in number ; which will be raised to five if Viverricula be 
included. The following list embraces these species, together with the best known 
fossil forms, exclusive of those from India. 
1. Viverra angustidens, Filli. 5 Quercy phosphorites. 
A species as large as V. zibetha, but with a shorter mandible, which is the only part 
known ; and a small talon to m. l, the blade of the same being unusually tall. 
2. Viverra antiqua, 6 Blain. Up. miocene. Allier. V. primceva , Pom. 
A small species with hinder molars, closely resembling V. malaccensis ; but with 
shorter palate. 
3. Viverra civetta, 7 (Schreb). Recent. North and West Africa. 
The largest living species : m - 2 relatively large ; m- 1 large internally ; pm- 4 short. 
4. Viverra exilis, 8 Blain. Mid. miocene. Sansan. 
A minute species, of which the generic determination is very doubtful. 
5. Viverra lemanensis, 9 Gerv (?). Up. miocene. Allier. 
Considerably smaller than V. zibetha ; with shorter palate. 
1 A specimen of G. vulgaris (B.M. No. 993, a) has no feuch cusp. 
2 The writer has not seen a skull of V. mcgaspila. 
3 A Siwalik species of IclUherium has been named ; the specimen on which it is founded will, however, he shown in 
the sequel to belong to the Hycenidce. 
4 Op. oil., p. 145. 5 “ Phosphorites du Quercy.” Pigs 121-2. 
6 Gervais. “Zool. et Pal. Fran 9,” 1st Ser., pi. XXVIII, figs. 7-8. Pomel. ‘ Bui. Soc. Geol. Framj,’ 1840, p. 379 
7 Blainville “ Osteographie.” Viverra, plate VIII. 
s Gervais, op.ci/., p. 224. * 9 Cast of skull in College of Surgeons. 
