63 



different conclusion 1 ). Owing, probably, to the fact of my provisioual 

 details beiug incomplete, they have not been properly appreciated, 

 nor does the right meauiug seem to have been grasped in all 

 instances. 



Pocock writes about the position of Sorensen's family of Triaeno- 

 nychidae, which I proposed to raise to the rank of a sub-order : 

 »a family resembling the Laniatores in all essential characters 

 except the presence of a single claw on the tarsi of the fifth and 

 sixth pairs of appendages." 



In this I do not agree with him. 



Further on he adds: »Iu Lomans's opinion the systematic value 

 assignable to the claws is equal to that of all the structural 

 characters combined." 



I cannot agree with him in this respect either, I even find this 

 opinion absurd. 



But it never was my own. This view of the matter was pro- 

 bably assigned to me on account of my having introduced the 

 claws of the hinderlegs in a key to the determination. But, surely, 

 all the known differences ueed not be enumerated in such a table. 



It may also be allowed, in elucidation of my opinion, to quote 

 the following paragraph from what T have written about this with 

 regard to the anatomy of Larifuga (fam. Triaenonychidae) : »To 

 judge from the external appearance the genus did not seem to 

 deviate so niuch from the genuine Gonyleptidae as Gnomulus; 

 but the internal organs soon proved to me how niuch I had 

 been mistaken. Instead of finding some similarity, I came across 

 unexpected differences, which, in conjunction with the external 

 characters, showed a wide difference between this Larifuga and 

 all other Opiliones." 2 ) 



For this reason I may briefly sum up here the principalpoiuts of dif- 

 ference between the Jnsidiatores and other animals of the order, which 

 I hope to fully point out, by the aid of cuts, in my forthcoming article. 



1. The dorsal carapace is somewhat similar to that of Laniatores, 



1) Ano. Mag. Nat. Hist. (7) Vol. 10, p. 511. 



2) translated from : Zool. Jahrb Syst. Vol. 13, p. 78. 



