414 



closely applied to this curved base of the penis, the right one 

 generally lying on top of the organ, more or less covering the 



space encircled by the 

 crook, but sometimes 

 being so far moved 

 sideways as it is drawn 

 in our figure. Each 

 testicle (ts) contains 

 sixteen follicles, which 

 are rounded distally 

 and narrowed towards 

 the common duct. 

 The follicles are 

 pressed closely to- 

 gether and form a 

 compact body, the 

 apical and dorsal sur- 

 faces of which resem- 

 ble to some extent 

 a compound berry. 

 In the structure of 

 the testicle Arixenia 

 essentially differs from 

 Hemimerus and the 

 Earwigs (as far as 

 they have been ex- 

 amined), the testis of 

 these insects being 

 composed of one or 

 two follicles rolled up. 

 The very slender vas 

 deferens (vd) origin- 

 ates at the ventral 

 side of the testis and 

 runs straight back- 

 wards to near the 



par È4 B2 



Figs. 24 and 25. — Reproductive organs oí 

 A rixenia jacobsoni ^ . ts, testis ; vd, vas deferens ; 

 de, ductus ejaculatorius ; Vi, apex of same ; vs, 

 vesicle ; dr, atrophied duct ; par, paramere ; le, 

 lever of paramere (abbreviated) ; B^, B^, B^, 

 B*, genital armature. 



rectum and then curves forward.^ 



1 In Forfícula and a few other Earwigs dissected by me the vas deferens 

 is also straight, not being coiled up as drawn by the earlier authors. — K. J. 



