﻿56 MESSES. ARNOLD-BEMROSE AND NEWTON ON AN [Feb. 1905, 



in size agree best with this species. These, in common with most 

 of the small vertebrates, were found with the rabbit-bones in the 

 fissure at the south- south-eastern end of the cave (No. 10). 



Microttjs agrestis (?) Linn. (Field-Vole.) 



Two incisor-teeth and three limb-bones, which are larger than 

 those of the bank-vole and agree in size with those of M. agrestis, 

 are, with doubt, referred to this species. They are from the south- 

 south-eastern fissure (No. 10). 



Microttjs amphibius (?) Linn. (Water-Yole.) 



Part of a lower incisor-tooth, which is too large for any of the 

 above-mentioned species and too small for the common rat, most 

 probably belongs to this species. Its horizon is uncertain. 



Lemmus lemmtts (??). (Norway Lemming.) 



The middle portion of a tibia intermediate in size between the 

 tibia of Microtus agrestis and that of M. amphibius, but agreeing in 

 this particular with the Norway lemming, may indicate the presence 

 of this northern form, which we know was living even farther 

 south in this country in Pleistocene times. 



Mus sylvatictjs (?) Linn. (Long-Tailed Field-Mouse.) 



Among the remains of small rodents is one perfect tibia, which 

 agrees most closely with that bone of the field-mouse. It was 

 discovered in the lower north-north-western layer (No. 11). 



Aves. 



Asio acctpitrinus, Pall. (Short-Eared Owl.) 



Two bones of this bird have been found — a perfect tarsometatarsus 

 and a broken humerus ; both of these agree with the correspond- 

 ing bones of the short-eared owl. They were found in the lower 

 layer (No. 9). 



Tttrdtjs iliactjs, Linn. (Redwing.) 



Two ulnas and parts of two tibias, representing at least two 

 individuals, are placed in this species. The bones of thrushes are 

 so alike in form that, except for size, they cannot be distinguished. 

 The present specimens are too small for a common thrush, but are of 

 the same size as these bones in the redwing. Two specimens were 

 found in the north-north-western lower layer (No. 11) and two in 

 the south-south-eastern fissure (No. 10). 



Erithactjs rubectjla (?) Linn. (Robin.) 



A single ulna, agreeing in form and size with this bone in the 

 robin, is, with some hesitation, referred to the same species ; it was 

 found in the north-north-western lower layer (No. 11). 



