420 WJiiiakcy : Notes on Bafr. 



the room. He knocked them down with a shpper, placed them 

 on the table, and turned into bed again, 



He was soon disturbed, however, by further squeaking, 

 continued in a minor key> and thinking the bats he had knocked 

 down were coming round again, he lighted a candle to see, 

 but found them quite still. 



The squeaking continued, and he at last located it as 

 proceeding from one of the juveniles, which was hanging on 

 the bed curtain about half way between the floor and ceiling. 

 He killed it and placed it with the others, but the squeaking 

 still continuing, he had another search, and at length discovered 

 a second young bat, suspended from one end of the blind roller, 

 which he promptly added to his bag. 



But his hunt was not yet ended, for before he could get 

 to sleep he was again disturbed by further squeaking, and, 

 losing his temper, got up once more, and made a thorough 

 search of the room, which resulted in two more baby bats 

 being found, the one suspended from the top edge of the skirt- 

 ing board, and the other clinging to the bed vallance. 



Although he allowed the window to remain open, no more 

 bats were heard or seen, either on that or subsequent nights. 

 One night, about a fortnight previous to that on which the six 

 bats above referred to were captured, two adult Pipistrelles, 

 one of each sex, had been captured in the same room. 



It will be seen from the foregoing account that, although 

 there seems to be some support given to the idea that these 

 young bats represented two cases of the birth of twins, it is 

 not by any means safe tO conclude that this was actually the 

 case. 



The following records of the occurrence of the Hairy-armed 

 Bat (r. leisleri) are of interest, this species still being looked 

 upon as one of the rarer English species. 



On August /th, 1909, Mr. Armitage and I went to examine 

 a colony of bats, which had been heard squeaking in a decayed 

 limb of a large oak tree at Rockley, near Barnsley. 



The day was very hot, and one could not remain many 

 minutes in the vicinity of the tree without having one's atten- 

 tion arrested by fitfull bursts of squeaking from the bat's den. 

 Previous experience would lead me to say that the arboreal 

 colonies of Noctule and Hairy-armed bats are far more noisy 

 and restless during hot weather than during cool. 



When we climbed up to the hole, which was situated in a 



Naturalist,- 



