Requested reference
Helsdingen, P. J. van (1979a). Remarks concerning Clubionidae. Bulletin of the British Arachnological Society 4: 298-302. 
-- Show included taxa
Helsdingen, P. J. van (1979a). Remarks concerning Clubionidae. Bulletin of the British Arachnological Society 4: 298-302. -- Show included taxa