THE LINNEAN ASCALAPHIDAE. 



157 



I also examined the male genital organs, which are of a very 

 primitive structure. The app. sup. 

 are semicircular short valves and 

 the genitalvalve is short, trian- 

 gular at the underside, v^ithout 

 any particularities. The penis is a 

 short, truncated chitinous hump, 

 which is only visible in chitin- 

 preparations. I examined them of 



many specimens of the three species, but could not find 

 any important difference. 



After all I presume, that only one very variable species 

 exists. 



Leyden Museum, November 1906. 



]^fotes from the Leyden TNluseam Vol. XXVIII, 



