324 THE ZOOLOGIST. 



The passes through the mountain barrier which isolates Cardigan- 

 shire are few in number, and are themselves situated at a great 

 height. Eisteddfa-Gurig (1350 ft.), a short distance south of 

 Plynlymon, is the most important of them. 



This barrier would seem to have excluded some birds ap- 

 proaching it from the east, and possibly some of the smaller 

 mammals also. On the other hand, it has offered an asylum 

 for other birds which have deserted many of their former haunts 

 in Britain, owing to the draining of the land. 



It will be attempted to show that the High Plateau has not 

 been without its effect on the mammalian fauna of North Cardi- 

 ganshire, which has undoubtedly found in it a sanctuary. 



The conclusions which I have deduced from the records 

 appear to me to be fully supported by the facts as these stand at 

 present. Some modifications may be necessary as new records 

 occur, but I venture to believe that such will but tend to 

 strengthen the views which I have set forth in this paper. 



List of Species. 



Noctule, or Great Bat (Pterygistes noctula, Leisler). — Occurs 

 in the district (Salter). Two large Bats, which probably belonged 

 to this species, were repeatedly seen in the summer of 1915, at 

 Penparke, near Aberystwyth, by Mr. F. Hutchings. 



Pipistrelle, or Common Bat (Pterygistes pipistrellus, Schreb.). 

 — Fairly common in the district. It would appear to venture 

 into the settlements but rarely, as I have observed it to do else- 

 where. It is occasionally seen on the Marine Terrace at Aberyst- 

 wyth, where one was killed in a house in 1915 (Mr. H. E. 

 Williams). 



Natterer's Bat (Myotis nattereri, Kuhl.). — " A colony of 

 Natterer's Bat has been found frequenting the tower of Llangor- 

 wen Church " — near Aberystwyth (Salter). 



Long-Eared Bat (Plecotus auritus, Linn.). — Not a great 

 deal is known with regard to the distribution of this Bat, which 

 seems, however, to be fairly common. Mr. A. E. Lloyd showed 

 me a specimen which he found recently in his bedroom at 

 Ehydypennau, near Llanfihangel geneu'r-glyn. 



Hedgehog (Erinaceus europceus, Linn.). — Common almost 

 everywhere in North Cardiganshire. It is not infrequently found 



