652 A CONTRIBUTION TOWARDS A KNOWLEDGE OF THE 



the length of each process ; in isabellm it is much shorter than 

 the length of process. The setas on the scuta are apparently 

 comparatively longer and more sparsely and irregularly placed. 



S. vulgaris is recorded from Austria, Italy, Switzerland, 

 Germany, and Denmark, in which latter country Prof. Hansen 

 found it under flower pots in cultivated gardens. 



I have found S. vulgaris freely in the counties of Northum- 

 berland and Durham. In my old collection I had a single 

 specimen from under a flower pot in a garden at Wylam, 

 Northumberland, and four exceedingly large specimens (over 

 3-0 mm. in length) from under a stone in a quarry at the high 

 end of Axwell Park, County Durham. 



I have also a solitary example taken by myself from under 

 a stone on the banks of the Clyde near Bishopton, Scotland. 



This year I have taken S. vtilgaris in the following 

 localities : — 



Northumberland. — Two specimens under a board in the 

 grounds of the Hancock Museum, Newcastle, March, 1910. 



Durham. — Several from under stones in a wood by the 

 north bank of the Wear near Hylton ; and in Lambton Park, 

 in Winter Gardens at Sunderland, and one specimen in my 

 garden at Penshaw, March, 1910. One specimen in a garden 

 and another under a stone lying on a damp spot on the cliffs 

 at Hart, March, 19x0. Seven or eight specimens under stones 

 in various parts of Axwell Park, April, 19 10, and not un- 

 commonly on the north bank of the Tees near Piercebridge, 

 June 25th, 1910. 



It will thus be seen that in our county S. vulgaris is not 

 confined to cultivated land. 



As so much of the foregoing matter is contained in Prof. 

 Hansen's monograph, I should perhaps apologise for dealing 

 somewhat extensively with the four species that we are now 

 able to recognise as British. I do this, however, hoping to 

 draw the special attention of naturalists to this and allied 

 groups, feeling sure that their special study will be an 



