240 RODENTIA. 
30322. Part of the left ramus of the mandible; from the Headon 
beds of Hordweli. This specimen is slightly larger than 
the preceding specimens, but probably belongs to the same 
species. Hastings Collection. Purchased, 1855. 
28905 a. Four upper cheek-teeth, not improbably belonging to a 
large individual of the present species ; from the Headon 
beds of Headon Hill, Isle of Wight. The crowns of the 
teeth do not exhibit the characteristic pattern sufficiently 
clearly to be sure of the specific determination. 
Presented by F. E. Edwards, Esq., 1854. 
36798. Numerous detached teeth; from the Headon beds of Hordwell. 
Presented by S. Laing, Esq., 1862. 
Genus PROTECHINOMYS, Schlosser’. 
Cheek-teeth very like those of Archwomys, but rooted ; they also 
resembie those of some species of Echinomys (e. g. E, leptosoma, 
Wagner). 
Protechinomys major, Schlosser’. 
The worn upper cheek-teeth exhibit either three or four bands of 
enamel. 
Hab. France. 
M. 1348 e. Several specimens of the maxilla; from the Upper 
Eocene of Caylux (Tarn-et-Garonne), France. These 
specimens agree precisely with those figured by Schlosser 
(loc. cit. pl. v. figs. 3, 4,15), exhibiting three bands of 
dentine on the crowns of the molars. Purchased, 1884. 
M. 1347. Several specimens of the maxilla; from the Upper Eocene 
of Caylux. These specimens exhibit four bands of dentine 
on the crowns of the molars, but agree otherwise with the 
type forms. Purchased, 1884, 
M. 1347 a. Numerous rami of the mandible ; from the Upper Eocene 
of Caylux. Most of these specimens agree with the speci- 
mens figured by Schlosser (oc. cat. pl. v. figs. 1, 17, 20); 
but some of the smaller ones may correspond with his 
P. gracilis, if that form be really distinct. 
Purchased, 1884. 
1 Palxontographica, vol, xxxi, p. 45 (1884), Protechimys. 
2 Ibid. p. 48. 
