MURIDZ, 931 
54 (0. C.) The middle portion of the cranium, the left ramus of the 
mandible, the ulna, innominate, femur, and tibia; from 
Kirkdale Cave, Yorkshire. 
Presented by W. Salmond, Esq. Before 1836. 
30518-9. Seven rami of the mandible; from the Pleistocene of 
Mayence. Hastings Collection. Purchased, 1855. 
35682. The greater portion of the right ramus of the mandible; 
from Kirkdale Cave. Bean Collection. Purchased, 1859. 
55 (0.C.). Part of the right ramus of the mandible and some detached 
teeth ; from the Bromberg Cave, Posen. 
Sommering Collection. Purchased, 1827. 
M. 1125. Anterior portion of the right ramus of the mandible of an 
Arvicola, apparently belonging to a small individual of the 
present species; from the Forest-bed of West Runton, 
. near Cromer, Norfolk. 
Presented by W. Barker, Esq., 1883. 
17643. A considerable portion of the skeleton ; from the Forest-bed 
of Ostend, near Bacton, Norfolk. 
Green Collection. Purchased, 1848. 
15944, 17641, 17626, 18231. Numerous specimens of the upper and 
lower jaws; from the Forest-bed of Ostend. There are 
numerous other specimens from this locality in the same 
collection, which it has been considered unnecessary to 
enter in this Catalogue. 
Green Collection. Purchased, 1843. 
36568. Two fragments of the mandible; said to have been obtained 
from the Eocene clay of Kyson, Suffolk. There is every 
probability that these specimens were introduced. 
Purchased, 18538. 
Arvicola ambiguus, Pomel’. 
Syn. Arvicola gulielmi, Sanford’. 
Five outer and six inner angles in the first lower molar; four 
outer and three inner angles in the second upper molar. ‘This 
' Catalogue Méthodique, p. 27 (1858). 
* Quart. Journ. Geol. Soe. vol. xxvi. p. 125 (1870). 
