228 Proceedings of the Royal Physical Society. 



at Aberlady, in Haddingtonshire. We have also met with it 

 on several occasions on the margins of fields, and even on a 

 moor at the foot of the Pentland Hills. In one locality we 

 find, besides the dark typical form, a colony of a bright yellow 

 variety, which Dr J. W. Folsoni of Cambridge, U.S.A., informs 

 us is the var. juvenilis of Fitch ; its colour, however, is clearly 

 quite independent of age. In some examples of this variety 

 purplish-grey markings and blotches are more or less apparent, 

 giving them a somewhat intermediate aspect. We have 

 almost invariably found the dark typical form on the bare 

 ground. The identity of the N'orth American S. hortensis, 

 Fitch, with the European >S^. pruinosus, Tullb., has recently 

 been established by Dr Folsom (5), who has kindly sent us 

 specimens of the American insect (both type and yellow 

 variety) in exchange for some of our Scottish specimens, that 

 we might see for ourselves how perfectly they agree. 



We know of no previous British record for this species 

 except that of Eeuter (12), who found it in Moray, Orkney, 

 and Shetland. Abroad it is recorded from Sweden, Finland, 

 Eussia, Germany, and Bohemia, North and South America 

 (Tierra del Fuego), and Japan. 



Local data. — Morningside Park, Edinburgh, common, July 1896 (and 

 again in 1899), on garden footpath; Aberlady (E. Lothian), a few in August ; 

 Bavelaw Moss (Midlothian), a few on bare peaty places, June 1899 ; grass 

 fields at Ormiston, near Kirknewton, type and var. juvenilis, fairly common, 

 but quite apart, July ; Parkly Craig (Linlithgow), a few on edge of farm-road, 

 August. 



Sminthurus luteus, Lubb. 



[Plate VI. Figs. 13-15.] 



This dainty little Spring-tail — in which, it may be men- 

 tioned, the three pairs of feet are all closely alike — is 

 abundant here on grass, clover, and other herbage in 

 meadows, and on the banks of ditches, etc., during the 

 summer half of the year. Elsewhere in Scotland it has 

 been found by Eeuter (12) in Moray and Orkney, and Evans 

 has taken it in the north of Perthshire. Lubbock (7) speaks 

 of it as " very common, among grass," presumably in the 

 south of England. Abroad it ranges from Scandinavia and 



