Notes and Comments. 



67 



NEW SPIDERS. 



The Rev. O. Pickard-Cambridge, M.A., F.R.S., has favoured 

 Tis with a copy of his paper on ' New and Rare British Arach- 

 nida, noted and observed in 1907,' reprinted from ' The Pro- 

 ceedings of the Dorset Natural History and Antiquarian Field 

 Club,' p. 161, 1908. This forms a valuable summary of the 

 work accomplished among the Arachnida in Great Britain 

 during 1907, and is illustrated by one plate. The species noted 

 for the North of England are as follows : — Ischnothyreus velox 

 Jackson (new to science), found in hot-houses at Alnwick, 

 Northumberland, and at Chester ; Prosthesima lutetiana L. 

 Koch, from Port Erin, Isle of Man ; Hahnia pusilla L. Koch, 

 and Theridion impressum, L. Koch, from Delamere Forest, 

 Cheshire ; Euryopis flavomaculata C. L. Koch, from Newton 

 Moss, Penrith ; Robertus neglectus Camb., from the Hull Dis- 

 trict ; Leptyphantes angulata Camb., from Northumberland ; 

 Hilaira pervicax J. E. Hull, from Whitfield, Northumberland ; 

 ■Centromerus concinnus Thorell, from Hull ; C. prohahilis sp. 

 n. and C. firmus Camb., from Northumberland ; Maro minutus 

 Camb., from near Huddersfield ; Maro falconerii from Dela- 

 mere Forest, Cheshire ; Erigone spinosa Camb., a species 

 new to Britain, found on Saltend Common, near Hull (for a 

 ■description of this species see the ' Naturalist,' 1908, p. 378-9) ; 

 E. longipalpis Sund., from Kirkby, Lancashire, and the Humber 

 Shore, near Hull ; E. avctica from Cheshire ; Entelecara 

 jacksonii Camb., from Delamere ; Araeonus crassiceps Westr., 

 from Newton Moss, Penrith ; Panamomops hicuspis from Hull. 

 This report also contains some interesting information con- 

 cerning species introduced into greenhouses, etc., with foreign 

 plants. 



DERBYSHIRE GLACIERS. 



Under the suggestive title ' Observations of the Effects of 

 •Glaciers in Derwent Valley, Derbyshire,' by E. M. Wrench, 

 M.V.O., F.R.C.S., we were recently tempted to peruse a paper 

 in the Journal of the Manchester Geographical Society. In it 

 we found much about the relationship between geology and 

 geography, Classics in Education, Roman Roads, Fog, Kelts 

 and Norsemen, but very little about ancient Derbyshire glaciers. 

 Mr. Wrench, however, has found ' scoriated rocks,' which had 

 been ' overlooked by Sir Archibald Geikie because his experi- 

 -ence was confined to the effects of glacial action upon hard 



agog March i. 



