Male Genital Armature of the Dermaptera. Part III. 9 



mucli simpler than in the Labiidfe, and shorter. The complex 

 chitin strnctnres are wanting. The basal vesicle is usually present, 

 but weakly developed ; but the virga has one or two narrow chitin- 

 lobes at the base. 



The metaparameres offer considerable variety of form, tending 

 to exaggeration in Chelisoehes ritsem/& and Hamaxas nigrorufus. 

 The manubrium in C. morio is longer than broad, gently narrowed, 

 and rounded at the tip. 



Adiathetus tencbrator Kirby. (S. India.) 



Metaparameres narrow, and gently sinuate ; virga nearly three 

 times as long as the metaparameres, witli scarcely dilated basal 

 vesicle, and two narrow chitin-lobes as long as the metaparameres. 



The virga agrees with A. shelf ordi (Borneo) as figured by 

 Zacher, but the metaparameres are somewhat different (see fig. 3 

 of Zacher) (PL IL fig. 7). 



Proreus simulans Stal. 



This is certainly the species figured by Zacher (fig. 7) as 

 Proreus sp., from Matupi. The metaparameres are bowed, dilated 

 externally in the middle. The virga is very long, nearly four 

 times as long as the metaparameres, with a single chitin -lobe at 

 the base (PI. II, fig. 8). 



Kinesis mounseyi Burr. 



The metaparameres resemble those of P. simulans, but the 

 virga is less than twice as long as the metaparameres, and has two 

 chitin-lobes at the base (PI. II, fig. 0). 



Chelisoehes morio Fabr. 



The meta])arameres are of the same form as in the two pre- 

 ceding species, but the dilation is less pronounced ; my specimens 

 show it more strongly than Zacher's figure. The virga is short, 

 with two chitin-lobes, and resembles that of K. mounseyi. 



Zacher figures Proreus fusci-pennis (? identity) and Kleiduchus 

 australicus, both of which are similar in design to Adiathetus and 

 Proreus (PL II, fig. 6). 



Enkrates Jlavipennis Fabr. 



Here, again, we have the same type, both of paramere and of 

 virga ; the latter is quite short, with two short chitin-lobes, and 

 feeble vesicle (PL II, fig. 10). 



