Collembola and Thysanura of the Edinhurgh District. 241 



Genus Cyphoderus, Nicolet. 

 Cyphoderus albinus, Nic. 



BecJcia albinos, Lubbock's "Monograph." 



As yet we know of only one locality for this neat little 

 silvery-white species ; and there, as usual, it occurs in ants' 

 nests. Although blind, it is very active. Eanges through- 

 out Europe, and is recorded from N". America. 



Local data. — At foot of Arthur's Seat, Edinburgh, fairly common under 

 stones along with Lasius flavus, Oct. and Nov. 



Genus Pseudosinella, Schaffer. 



Pseudosinella cavernarum (Moniez). 



Sira cavernarum, Moniez (9). 

 Cyphoderus Martclii, Carpenter (3). 

 Tullhergia immaculata, Lie-Pettersen (6). 



On the farm of Moredun Mains, near Gilmerton, a few 

 miles south of Edinburgh, there is an old limestone-mine 

 or subterranean quarry, which there is reason to believe has 

 not been worked for at least three-quarters of a century. 

 The limestone beds — which are only a few feet thick and 

 have a rapid dip — liave not been quarried to any great 

 depth, but in the line of outcrop the excavations extend 

 fully a quarter of a mile. The line of outcrop is marked 

 by a series of grassy and tree-girt hollows, from each of 

 which at least one opening leads directly into the mine and 

 admits more or less daylight. One portion of the mine 

 — the southern — extends, however, probably 200 yards 

 or more beyond the nearest present entrance, and in it 

 traces of the outside light are soon lost. Here, on 11th 

 April 1899, Evans spent several hours searching for 

 Collembola, and was rewarded by the discovery of this 

 interesting cave species, previously standing in the British 

 list only from the Mitchelstown Cave in Ireland — see 

 Carpenter's paper (3) in the Irish Naturalist for 1897, 

 where full particulars, with description and figure of the 

 insect, which is white and destitute of eyes, are given. 

 The Moredun examples are quite indistinguishable from 

 Mitchelstown ones. The type specimen was obtained by 



