Xll INTPvODTlCTION. 



regarded by Dr. Filhol ^ as belonging to the Erinaceidce. In 

 describing Palceoerinaceus edwardsi from St. Gerand-le-Puy, the 

 latter writer also states ^ that the mandibles entered in pt. i. p. 17 

 under the name of Erinaceus arvernensis, Gervais (non Blainv.), 

 " sont absolument semblables a ceux que j'ai pu etudier provenant 

 de Saint Gerand ;" although in the next paragraph he proceeds to 

 observe that " je ne crois pas qu'on puisse essayer de confondre le 

 fossile trouve a Saint Gerand avec ceux decouverts dans les terrains 

 de Cournon et des Chouffours, qui constituent des horizons geologi- 

 ques diiferents." Now since the types of E. arvernensis, Gervais, 

 are from Cournon, it is very difficult to reconcile these two state- 

 ments ; but if they be really the same as Palceoerinaceus edwardsi, 

 they must be referred to that genus, although the earlier specific 

 name should be retained. Palceoerinaceus, it may be observed, 

 differs from Erinaceus by the greater wddth of the palate, which is 

 without vacuities. In the second place, the identification by Dr. 

 Fraas in the passage cited of Plesiosorex soricinoides {Erinaceus sari- 

 cinoides, Blainville) with Parasorex socialis, Meyer, is erroneous, 

 aud the specimens entered in pt. i. p. 19 under the former name 

 are accordingly re-entered in the Supplement under the latter. 



In the Carnivora, a mandible of Machcerodus from the Norfolk 

 Forest-bed, of which a cast is entered in the Supplement, has afforded 

 strong reasons for doubting the correctness of the identification by 

 Kaup and Gaudry of the Eppelsheim and Pikermi form with the Yal 

 d'Arno M. cidtridens. Hyaena antiqua (pt. i. p. (S7) is in all probability 

 a synonym of ^. striata {vide Supplement, p. 315). The remarkable 

 humerus and tibia (ISTos. M. 1710-1) from the Quercy Phosphorites, 

 entered on p. 148 of the same part, and provisionally referred (after 

 Dr. Filhol) to a Ganoid, have been found to agree so closely with the 

 corresponding bones of the Condylarthra ^, as to suggest the proba- 

 bility of their belonging to that suborder. The only known Condyl- 

 arthrous genus from those deposits is Hyracodontlieriurn'^ , which has 

 been shown by Dr. Schlosser ^ to be nearly allied to Meniscotherium^ ; 

 but the specimens in question appear too large for the one known 

 species of the European genus. In the Rodentia it should have been 



' Ann. Sci. Geol. vol. x. art. 3, pp. 20-21. 

 2 0/j. cit. p. 21'. 



•* See Cope, Amer. Nat. vol. xviii. p. 799, fig. 7, and p. 904, fig. 27 (1884). 

 4 See Filhol. Ann. Sci. Geol. vol. viii. pi. xiii. figs. 283-4 (1877). 

 " Morpliol. Jahrb. vol. xii. p. 22 (188()). 



" Schlosser (op. cit.) refers these genera to the Pen'issoclactyla, a view which 

 is not accepted by Cope (Amor. Nat. vol. xx. p. 721 [1880]). 



