94. CARNIVORA. 
28121. A metatarsal and a proximal phalangeal; from the Lower 
Pliocene of Cucuron (Vaucluse), France. 
Bravard Collection. Purchased, 1852. 
Ictitherium robustum (P. Gervais’). 
Syn. Thallasictis robusta, P. Gervais’. 
Letitherium viverrinum, Roth and Wagner’. 
Hab. Kurope. 
49676. Cast of the cranium and mandible. The originals are in the 
Museum at Munich, and were obtained from the Lower 
Pliocene of Pikermi, Attica. Purchased, 1879. 
Genus PALHIOPRIONODON, Filhol*. 
Dentition :—I. 5 C. x Pm. s, M. =. The second lower molar is 
small, and there is a minute inner cusp to m. 1, by which the genus 
is distinguished from the musteline genus Pleswctis. The genus 
seems to pass almost insensibly in one direction into the feline genus 
Pseudelurus, and in another through Stenoplesictis to Cynodictis. 
The lower teeth are exceedingly like those of Prionodon. 
Palzoprionodon mutabilis, Filhol’. 
Syn. Plesiogale mutabilis, Filhol. 
Paleoprionodon lamandim, Filhol. 
Paleoprionodon lamandim, var. mutabilis, Filhol. 
History. In 1877 Filhol (Ann. Sci. Géol. vol. viii. art. 1, p. 42, 
vol. vil. pl. xxv. figs.° 110-118) described and figured certain 
mandibles of a viverrine Carnivore under the name of Plesiogale 
mutabilis. In 1880 (Compt. Rend. vol. xc. p. 1579) he described 
another lower jaw under the name Palwoprionodon lamandin. In 
1882 (Ann. Soc. Sci. Phys. Nat. Toulouse, p. 68, pl. iv. fig. 4) the 
same writer figured and fully described the lower jaw on which that 
species was founded. At the same time (eid. p. 74) he came to the 
conclusion that the so-called Plesiogale mutabilis was only a variety 
of Paleoprionodon lamandini, and proposed to call’ it by the name 
of Palwoprionodon lamandini, var mutabils. It is clear, however, 
1 Zool. et Pal. Frangaises, Ist ed. vol. i. p. 120 (1848-52), Thallasictis. 
2 Tbid. 
3 Abh. math.-phys. Cl. k.-bay. Ak. Wiss. vol. viii. pt. 1, figs. 5, 6 (1857). 
* Comptes Rendus, vol. xe. p. 1579 (1880). : 
5 Ann. Sci. Géol. vol. viii. art. 1, p. 42 (1877), Plesiogale. 
® There is some incorrectness in the references to these figures. 

