EXTINCT CIVETS AND MUNGOOSES. 293 
V. GENUS ICTITHERIUM. 
Ictitherium, Wagner, Abh. bayer. Acad. vol. v. pt. 2, p.335(1848). 
Galeotherium, Wagner, of. cit. vol. ili. pl. i. (1840), mec Jager. 
Thallasictis, Gervais (ex Nordmann), Zool. et. Pal. Frang. vol. 
i, p. 120 (1848-50). 
Palhyena, Gervais, op. cit. 2nd ed. p. 242 (1858). 
Lepthyena, Lydekker, Pal. Ind. (Mem. Geol. Surv. Ind.), ser. 
10, vol. ii. p. 312 (1884). 
Having the same number of teeth as in the Civets, this 
European and Asiatic genus of the Lower Pliocene differs 
from all the other members of the Family in that the upper 
carnassial tooth has a three-lobed blade, as in the modern Cats 
and Hyzenas, one of the species having been regarded as a con- 
necting link between the Viverride and Hyenide. ‘The skull 
is elongated and narrow, with a strong and upwardly-curved 
postorbital process behind the socket of the eye, the hind-foot 
is furnished with five toes, and the tail is very long. 
The three species, namely, L. robustum, I. orbignyi, and L. hip- 
parionum, occurring in the Lower Pliocene deposits of France, 
Attica, Samos, Hungary, Bessarabia, and Persia, vary in size from 
that of a Civet to that of a Jackal. The thirdand largest is the 
one making the nearest approximation to the Hyzenas, its upper 
carnassial tooth being greatly elongated, and the molars in the 
same jaw very small. In the Siwalik rocks of India the genus 
is represented by the imperfectly known Z. s¢va/ense. 
VI. GENUS PAL/EOPRIONODON. 
Paleoprionodon, Filhol, Comptes Rendus, vol. xc. p. 1579 
(1880); id., Bull. Soc. Philom. ser. 8, vol. i. p. 115 
(1889). 
This and the following genus appear to form a connecting 
link between the Civets (Viverridz) and the Weasels (AZus- 
telide), and are thus placed by some paleontologists in the 
