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VOL. XIV. (1) FOREST BED—-PALEZONTOLOGY 45 
3. AMPHIBIA. 
The amphibian“ remains obtained from the Westbury 
deposit are all referable to the two genera Rana and Bu/o. 
Some of the specimens seem to be sufficiently distinctive 
to enable a specific reference to be made. 
Rana temporaria, Linn. (Common Frog). A left 
ilium of large size agrees with recent skeletons of the 
Common Frog in possessing an elongated tubercle of the 
ischial border just anterior to the acetabulum. The 
situation and character of the backwardly projecting pro- 
cess in which the ischial border terminates posteriorly is 
likewise similar in the fossil and in the recent specimens. 
This perfect agreement appears to me to justify a reference 
to R. temporaria. Besides this specimen the distal 
portion of a left humerus and a tibio-fibula are referred 
to this species provisionally since they agree with it very 
closely. 
The Common Frog has been obtained from the Norfolk 
Forest Bed, and it occurs in several Pleistocene deposits 
in England. 
Bufo vulgaris, Linn. (Common Toad). The distal 
portion of a left humerus presents the lateral condylar 
development, characteristic of the humerus of the Toad. 
On this account the specimen is referred to B. valgarzs. 
The species is known from the Norfolk Forest Bed, and 
from certain English Pleistocene deposits. 
In conclusion it is to be hoped that the work of 
collecting and examining samples will be taken up by 
many geologists working at the various Post-Pliocene 
deposits, so that in time it will be possible to give as 
complete a list of the smaller vertebrates as we can of the 
larger forms at the present day. 
