THE CANADIAN ENTOMOLOGIST. 31 



genus, many of which are doubtless only forms of one species. In the 

 modern European literature, nothing is done with Koch's species of 

 this genus, save by Oudemans (1897), who identifies four of the Kochian 

 names. Oudemans, however, appears to be ignorant of the fact that 

 there were several other names for this genus besides ^cyphius, for he 

 thinks, since Scyp/iius is preoccupied, that the genus must have a new 

 name. 



However, in 1886 it received two names, Norneria from Canestrini 

 and Scyphoides from Berlese. The former has the priority, and is used 

 by Berlese in his " Acari Italiani." Canestrini pleaded the impossibility 

 of identifying Koch's species, and described both of the Italian forms as 

 new, in which he has been followed by Berlese. Neither of the Italian 

 authors appear to be aware of either Rhagidia or Fceciiophysis, else they 

 would have mentioned the similarity between these forms ; and Berlese 

 omits these genera from his list, which professes to be complete for the 

 world. There is not, however, any doubt that Rhagidia is generically 

 the same as ScypJiiits, and Rhagidia has priority over all the other names 

 proposed to replace Scyphiiis (which is preoccupied). Fceciiophysis, in 

 spite of its alleged eyes, is not, in my opinion, distinct from Rhagidia. 

 The Scyphoides of Karpelles (1891) is evidently a different genus^ but 

 somewhat allied to Rhagidia. 



Rhagidia is thus a world-wide genus, known by the large mandibles 

 and its resemblance to Solfugidce, a fact noticed by both Thorell and 

 Cambridge. The genus will stand as follows : 

 Rhagidia, Thorell, 187 1. 



Scyphius, Koch (preoccupied). 



Fceciiophysis, Cambridge, 1876. 



Norneria, Canestrini, 1886. 



Scyphoides, Berlese, 1886. 



It is impossible to tell how many of Koch's names represent good 



species : however, omitting these, there are the following species in the 



genus : 



Rhagidia gelida, Thorell — Behring Island, Nova Zembla, Siberia. 



" kergiielensis, Cambr. (Fceciiophysis) — Kerguelen. 



" ^/^a.f, Canestr. (Norneria) — Italy. 



" ciavifroHS, Canestr. (Norneria) — Italy. 



" hamata, Kr. and Neum. (Scyphius) — Japan. 



" japonica, Kr. and Neum. (Scyphius) — Japan. 



" pallida, Banks — United Slates. 



