Male Genital Armature of the Derma'ptcra. Part III. 3 



We find a far smaller diversity of form than in the Proto- 

 dermaptera ; tlie metaparameres are of two main types, one more or 

 less acuminate {Labiinie, Ckelisochinm), the other with rounded tips 

 (Opisthocosmiins}, Anechurina'', Forficulimv). The virga and reni- 

 form vesicle offer useful characters, but more of specific than of 

 generic value. The length of the virga seems to be a useful 

 character in the Forficulimv and Opisthocosmiina}, but I always 

 have a feeling of doubt that this may be an elastic feature, and 

 tliat the virga is capable of considerable extension in erection. 



In all instances tliat I have examined, the mauubiium is short 

 and small, about half as broad as long, and rounded at the tip. 



Family LABIID^. 



In accepting Zacher's definite proposal to reduce the Chelisochidse 

 to the rank of a subfamily of the Lahiidce, the inclusion of Peri- 

 comns Burr, Vandex Burr, Strongylopsalis Burr, and Nesogaster 

 Verb., into either the Labiinm or Spongophorina^, follows ; they are 

 very well-marked genera, but cannot be given the same rank as 

 the Chelisochinas. It is tempting to think that we may be able to 

 define the Lahiinse as an Old World, the SponipJiorina} as a New 

 World group, but we must be careful not to stretch our facts to 

 suit our theories. 



Subfamily Labiin^e. 



Zacher briefly refers to the Lahiinx, Sparattinie, and Spongi- 

 phorinas, but I am unable to make much use of his work in this 

 respect, as he fails to figure any of the last group, and I have 

 no material as yet available. Zacher states that the parameres 

 resemble those of the preceding groups, that the virga is typical 

 and very long, and that there is a hairy field in the preputial 

 sac. 



As to his Sparattinm, we must eliminate his " Sparatta sp." 

 from the Kamerun (his fig. 2), as the Sparattinx are an exclusively 

 Neotropical group. His fig. 20, " Sparatta sp./' also from the 

 Kamerun, is subject to the same criticism. These two evidently 

 are related to Ghmtospania or Spongovostox, as we shall pre- 

 sently see. 



His fig. 1 is called Parasparatta schotti. I question the accu- 

 racy of the identification, as this species is only known from the 

 original type of Dohrn, which is a female, in the Vienna Museum. 

 His specimen is, however, probably a true Brazilian Sparatta, 

 though he refers to no locality. The genitalia resemble those 

 figured by Borelli of Metasparatta chacoensis Bor., with charac- 

 teristic narrow and acuminate and slightly recurved metapara- 



B 2 



