i^'I - MR. C. JJ WITH ON SOME NEW SPECIES OF 



definition of the Obisiince, Dad., and Pseudohisiince, Hansen, very doubtful. 

 As even the character found in the tactile hairs of the hand fails — for in 

 /. Cambridgei, L. Koch, only the fingers seem to bear hairs — I really think that 

 the two subfamilies, at least as hitherto defined, may be abandoned, and that 

 the limitation between the established genera is less sharp than desirable 

 (cf. With, 18. p. 76). But, with only scanty material at my disposal, I do 

 not wish at present to make alteration in the established system. Although 

 a determination of the Obisiidce, Hansen, forming part of the British Museum's 

 collections, has convinced me that this family is in sore need of a complete 

 revision, based on rich material and on modern lines, nevertheless alterations, 

 even improvements, are not to be recommended in classification unless they 

 are absolutely necessary and can be made with certainty. 



Bibliography. 



1. L. Koch. — [Jebersichtliche Darstellung der europaischen Chernetiden 



(Psendoscorpiones). Niirnberg (1873), pp. 1-68. 



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pis. 17-19. 



3. T. Thorell. — " Descrizione di Alcuni Arachnidi inferiori delP Archi- 



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 pp. 21-69, taw. 4-6. 



4. E. KeyserliNg ; L. Koch, — Die Arachniden Australiens. Niirnberg. 



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