262 Proceedings of the Royal Physical Society. 



France is of old standing. To this country it no doubt 

 found its way in foreign goods.] 



Family MACHILID.^. 

 Genus Machills, Latreille. 



Machilis polypoda (Linn.). 



We have found small colonies of this Bristle-tail in several 

 localities, among heaps of stones, etc., in hilly places and in 

 old quarries ; but, except in a few spots, it can scarcely be 

 called a common insect here. It appears to have a prefer- 

 ence for dry sunny situations. It is common in Ireland; 

 but rare in the south of England, according to Lubbock. 

 Abroad it seems to be widely distributed over Europe, and 

 its range extends to North Africa. 



Local data. — Blackford Hill, Edinburgh, several, May 1895; Arthur's Seat, 

 common, and in limestone quarry, Charlestown (Fife), several, Feb. 1896; 

 Aberfoyle, a few, April 1896 ; Bridge of Allan, one under moss on wall, 

 Feb. 1898. 



Machilis maritima (Leach). 



This fine species is abundant under stones at or near 

 high-water mark on the coasts of East Lothian and Fife, 

 and on the islands of the Firth of Forth. It occurs com- 

 monly on the rocky shores of England, Ireland, France, and 

 Norway ; and it has also been recorded from Orkney and 

 Shetland, and from the Canary Isles. 



Local data. — Beach near North Berwick, common, Dec. 1895, etc.; shore 

 west of Aberlady, abundant, July and Sept. 1896 ; Aberdour, March 1896, 

 common ; Isle of May, a good many, Aug. 1897 ; etc. 



References. 



1. Brook, G., Notes on some little known Collembola, and on 



the British species of the genus Tomocerus, Jour. Linn. 

 Soc. (Zool.), vol. xvii., 1884, pp. 19-25, pi. i. 



2. A Revision of the genus Entomobrya, Rond. 



(Degeeria, Nic), t. c, pp. 270-283, pis. x., xi. 



3. Carpenter, G. H., The Collembola of Mitchelstown Cave, 



Irish Nat., vol. vi., 1897, pp. 225-233 and 257-8, pi. ii. 



