122 H. WALLIS KEW : AN HISTORICAL ACCOUNT OF 



Cornwall, taken on rocks contiguous to the sea. = Obisium 

 maritimum Leach, 1817. 



9. Leach, W. E. — Crustaceology. In Brewster's Edinburgh 

 Encyclopaedia, vii. pp. 383-437. Edinburgh [1814 ?]. * 



This is the first of several contributions to our subject by 

 Leach — less than 25 years of age at this time — a man unfettered 

 by the traditions that had kept our naturalists in the wake of 

 those of France, and a warm advocate for generic divisions 

 founded on the consideration of every character. He was the 

 first in these Islands to adopt Chelifer ; and the first to dismember 

 it by the establishment of a second genus. The species listed 

 are not necessarily British ; among them, however, is Chelifer 

 tromhidioides Latr. — Ohisium trombidioides Leach's MSS. — which 

 had been found by Montagu in Devonshire, and by Leach in 

 Surrey. = Chihonius sp. 



10. Leach, W. E. — A tabular View of the external Characters 

 of Four Classes of Animals which Linne arranged under Insecta. 

 Trans. Linnean Society, xi. pp. 306-400. London, 1815. 



In this memoir Leach characterizes Chelifer and Ohisium as 

 separate genera ; and describes " Chelifer fasciatus " : Habitat 

 sub cortice arborum ; but without locality. 



11. Leach, W. E. — Annulosa. In Encyclopaedia Britannica ; 

 Supplement, i. pp. 401-53. Edinburgh, 1816. 



He states here that " Chelifer fasciatus " inhabits beneath the 

 bark of willow and other trees and occurs sometimes near Lon- 

 don ; cf. Leach (12) = Chelifer (Chernes) cimicoides (Fabr.). 



12. Leach, W. E. — On the Characters of the Genera of the 

 Family Scorpionidea, with Descriptions of the British Species 

 of Chelifer and Obisium. Zoological Miscellany, iii. pp. 48-53. 

 London, 1817. 



This memoir comprises — according to a statement probably 

 by Leach himself — a valuable monograph on the British species 

 of Chelifer and Ohisium, illustrated with very accurate figures 

 of the whole.* It is the first attempt to present in such a manner 

 this part of our fauna ; and it is noteworthy that, except in the 

 work of Hermann already mentioned, no similar task had been 



* Leach ? — In Samouelle's Entomologist's Useful Compendium, 

 London, 1819. 



