Requested reference
Pickard-Cambridge, F. O. (1901a). Arachnida - Araneida and Opiliones. In: Biologia Centrali-Americana, Zoology. London, 2, pp. 193-312, pl. 15-30. [for the exact dates see Lyal, 2011] 
-- Show included taxa
Pickard-Cambridge, F. O. (1901a). Arachnida - Araneida and Opiliones. In: Biologia Centrali-Americana, Zoology. London, 2, pp. 193-312, pl. 15-30. [for the exact dates see Lyal, 2011] -- Show included taxa