4 ARKIV FÖR ZOOLOGI. BAND 2. N:0 8. 



far-reaching. much more so tlian one would expect according 

 to its titlc, and for t hat reason it may be expedient to men- 

 tion here a portion of its contents. The author rejects the 

 names Schizonotus Thor. and Tripeltis Thor. as preoccupied 

 and proposes Schizomus and Triplo7mis for the two genera; 

 it is necessary to adopt the former of these innovations. 

 Furthermore Cook estabhshes a new genus, Hubbardia, for 

 the reception of a species, H. pentapeltis, from Palm Springs, 

 Cahfornia; he gives a detailed description of this new form 

 and illustrates it on the plate. But H. pentapeltis being a 

 Trithyreus — which will be proved below — the genus Hub- 

 bardia can not be maintained. He suppresses the denomination 

 Schizonotoidse Thor. for the family and names it Hubbar- 

 diidse, but as Hubbardia itself is to be rejected the name 

 Hubbardiidse must be considered most inadequate; we propose 

 to name the family Schizomoidse, as the name Schizomus Cook 

 must be adopt ed instead of Schizonotus Thor. (Nyctalops 

 Cambr.). In a tabu] ar view of the genera he establishes a 

 fourth genus, Artacarus, but it is probably a species of 

 Schizomus, as will be shown in the sequei. Next he pro- 

 ceeds to considerations on the systematic position of the 

 Tartarides; after several comments he set forth a conspectus 

 of the Pedipalpi, referring to them the Palpigradi and subse- 

 quently dividing them into four orders: Microthelyphonida 

 [Palpigradi], Colopyga [TartaridesJ, Uropyga [Oxopoei] and 

 Amblypyga. But scarcely any Zoologis t who is well or only 

 moderately acquaintcd with the structure of the orders of 

 Arachnida, will adopt this classifaction. It may be a matter 

 of opinion whether the Uropygi (Oxopoei and Tartarides) and 

 Amblypygi ought to be considered as two suborders of the 

 Pedipalpi or it may be preferable to dissolve this order, 

 establishing each of the two suborders as independent orders: 

 it is well known that the Amblypygi are akin to the Araneae 

 in several respects. But it is impossible to join Cook in con- 

 sidering the Tartarides as a group equivalent with Oxopoei 

 or Amblypygi, because the Tartarides are so closely allied 

 to the Oxopoei that only few more momentous difference- 

 can be pointed out between them, while the Amblypygi are 

 far more distant, differing from the Oxopoei and Tartarides 

 in a considerable number of weighty structural features. As 

 to the Palpigradi we refer to our earlier paper (1. c.) in which 



