URSID A. 145 
vol. li. p. 926) proposed the generic term Metarctos; and in the 
following year (‘ Animaux Fossiles et Géologie de l’Attique,’ p. 37, 
pl. vi. figs. 1, 2) included in it both the Eppelsheim G'ulo diaphorus 
and the Pikermi Gulo primigenius, making, however, no mention 
of the generic terms Pseudocyon and Simocyon. In 1862 Hensel 
(Monatsb. k. preuss. Ak. Wiss. [volume for 1863] p. 566) came to 
the conclusion that, on account of the difference in the number of 
their teeth, Gaudry’s reference of the Eppelsheim and Pikermi 
forms to the same species was erroneous; and he accordingly applied 
the name Simocyon primgenius to the latter. Assuming that both 
specimens belong to the same genus (of which there is no doubt), it 
is evident that the generic term Simocyon is the correct one; and 
that the specific name diaphorus belongs to the Eppelsheim, and 
primigenius to the Pikermi form, if the latter be distinct. Seeing 
that no differences can be detected between the two forms with the 
exception of the variation in the number of the premolars, and 
bearing in mind the instances of Jcticyon venaticus and Hyena 
felina, the two forms are provisionally associated in this Catalogue. 
Dentition :—I. =, C. 2 Pm. ay M. 2. The position of the 
genus is evidently between the Bears and the Dogs. 
Simocyon diaphorus (Kaup’). 
Syn. Gulo diaphorus, Kaup. 
Gulo primigentus, Roth and Wagner. 
Canis lupus prinugenius, Wagner. 
Amphicyon minor, Blainville’ (en parte). 
Pseudocyon robustus, Wagner. 
Simocyon robustus, Wagner. 
Metarctos diaphorus, Gaudry. 
Simocyon primigenius, Hensel. 
Hab. Greece and Germany. 
M. 412. Cast of the left ramus of the mandible, showing the two 
true molars, the two last premolars, and the alveoli of 
pm. 1 and pm.2. ‘The original of this specimen is from 
the Upper Miocene of Eppelsheim, Hesse Darmstadt; and 
is believed to be in the Museum at Darmstadt. It is the 
type of the species ; and is figured by Kaup in the Oss. 
Foss. de Darmstadt, pt. ii. pl. i. figs. 1, 2, under the name 
* Archiv fir Natur, vol. v. p. 151, pl. ii. figs. 1, 2 (1832) (teste Gaudry). 
Oss. Foss. de Darmstadt, pt. ii. p. 15 (1833). The references to most of the 
synonyms are given above. 
2 Ostéographie, genus Subursus, p. 114 (1841). 
