294 



Kew : North of England Pscudoscorpions. 



must compare it in detail with published descriptions. It is 

 true that all the Pseudoscorpions are small, and have to be 

 specially searched for ; but their forn\ is so odd, and iheir 

 deportment and g"eneral proceedings so remarkable, that no one 

 is likely to regret an acquaintance with them ; and it would well 

 serve my purpose to attempt to name specimens for readers who 

 may be interested in them. They travel well alive in tubes with 

 a little moss, or dead in tubes of spirit ; and may be addressed 

 to me in the care of the Union of London and Smith's Bank, 

 2, Princes Street, E.C. 



The principal works used in the preparation of the key, 

 and of the classified list which follows it, are (i) E. Simon, 



Fit. I. — Chelifer latrelllli ; Fig. 2. Chthonius rayi: two of the Pseudoscorpior.s 

 (Class : Arachnida ; Order Pseudoscorpiones). 



Outline diagrams made by the writer from Lincolnshire specimens ; much enlarg-ed. The 

 minute structures of 'he chelicerEe, and most of the hairs are omitted. 



Chelifer latreillii (Sub-order: Panctenodactyli) is known in the north of England in 

 Yorkshire and Lincolnshire ; .ind is found in considcr-ihle plenty in the ne giibourhood ot the 

 coast. Chthonius rayi (Suh-order : Hemictinodactyli) is known in the north of Eiigl.i.id 

 in the samecciunties ; and is probably generally distributed throughout the cciuntry. 



The animals, exclusive of the appendages, are about 3 mm. and 2 mm. in length respec- 

 tively. 



' Les .A.rachnides de France,' VII. (1S79), pp. 1-78; (2) L. 

 Balzan, ' Voyag"e de M. E. Simon au Venezuela : Pseudo- 

 scorpiones,' Annales de la Sociele entomologique de France, 

 LX. (1891), pp. 497-552; (3) O. P. -Cambridge, 'On the British 

 Species of False-Scorpions,' Proceedings of the Dorset NaturiiJ 

 History and Antiquarian Field Club, XIII. (1892), pp. 199-231 ; 

 (4) H. J. Hansen, ' Organs and Characters in different Orders 



Naturalist, 



