Requested reference
Pickard-Cambridge, F. O. (1893). Handbook to the study of British spiders (Drassidae and Agalenidae). British Naturalist 3(Supplement): 117-170. 
-- Show included taxa
Pickard-Cambridge, F. O. (1893). Handbook to the study of British spiders (Drassidae and Agalenidae). British Naturalist 3(Supplement): 117-170. -- Show included taxa