Collembola and Thysanura of the Edinhurgh District. 245 



Brook (2) regards the three last named forms as varieties 

 of one species. We are inclined, however, to follow Eeuter, 

 Tullberg, Schaffer, Schott, and others, in considering them 

 distinct. 



Local data.— Among vegetable refuse in a garden at Aberlady, East 

 Lothian, Aug. 1896, a few ; in greenhouse, Morningside, March 1899, one. 



Genus Orchesella, Templeton. 



Orchesella cincta (Linn.). 



This, in some respects the finest of our Spring-tails, is 

 both common and generally distributed in the district. 

 Although occurring throughout the year, we have found it 

 more numerous from autumn to spring than during the 

 summer. The three varieties so beautifully figured in 

 Lubbock's " Monograph " have all been met with : the pale 

 one, however, is rare. The dark form is the var. vaga, Linn. 

 The species ranges throughout Europe, occurring also in 

 North America and Greenland. 



Local data. — Fairmilehead and North Berwick, Jan.; Arthur's Seat, 

 Comiston, Pentland Hills above Swanston, and Burntisland, under stones, 

 bark, etc., type and var. vaga, Feb.; Mortonhall, Balerno, and Kirknewton, 

 March; Bucklyvie and Aberfoyle, April; Comiston, July; Longniddry, Aug.; 

 LufTness and Uphall, Sept.; Rosslyn and Penicuik, Oct.; and Ratho, Nov.— 

 all in 1896 ; Vogrie, Feb.; Braid Hills, Cullalo, and Dollar, common, April 

 1897; Arniston, May; and banks of Braid Burn, a few, June 1898 ; etc. 



Orchesella villosa (Geoft.). 



We have as yet met with 0. villosa in but two localities, 

 both in the western outskirts of the district. It is evidently 

 very local, and probably nowhere common. This appears to 

 be a more or less southern species ; for though Lubbock 

 states that it occurs in Sweden, it is not mentioned in any 

 of the Scandinavian or Finnish lists of Tullberg, Schott, 

 Lie-Pettersen, and Eeuter. It is recorded from Germany, 

 France, Switzerland, and England, and is found in Ireland. 



Local data.— Bridge of Allan (W. Berth), Jan. 1894, a few; Dollar 

 (Clackmannanshire), April 1897, a good many under stones at foot of a hedge. 



