( 326 ) 



Fig. 3. Posterior part of head oi Hemimerv^, dorsal view. 



Itch = nuchal plate, forming the dorsal wall of the foramen occipitale. 

 „ 4. External portion of the ductns ejacnlatorins of llrmimcrtis d , ventral 

 view. 



tin = bundle of transverse muscles. 



M = chitinous armature (valvae). 



j>e = penis, with two orifices. 

 „ o. Reproductive system of <? of Ilrmimcras, dorsal virw (only the right 

 testicle drawn). 



ts = testicle. 



td = vas deferens. 



vs = vesicula seminalis. 



re ■= reservoir. 



dei = ductus ejacnlatorins. 



le>: = chitinous lever for the chitinous genital armatnre. 



tm = bundle of transverse muscles. 



Im = bundle of longitudinal muscles. 



va = chitinous armature of the penis (valvae). 



et = dorsal plate of peuis. 



pe = penis. 

 „ 6. Last abdominal segments of ? of Hemimerus, ventral view. 



el = cerci. 



VII. ty and vii. st = seventh segment of abdomen. 

 „ 7. The same, with the seventh sternite removed. 



viii.st = eighth sternite. viii.t;/ = eighth tergite. 



IX. St = ninth „ ix. ty = ninth ,, 



X. St = tenth „ x. fff = tenth 



XI. tff = eleventh ,, (p3-gidium). 



ci = cerci. 

 ,, 8. Reproductive system of ? of Hrwimeius, ventral view (only the right 

 ovary drawn). 

 Eight tubes, each containing one embryo. 



/( = head of embryo. 



nek = nutriment chamber. 



oiv/ = oviduct. 

 ,, !*. Head and anterior part of j)ronotum of embryo of He mi me?- its, dorsal view. 



A = head. 



prt = pronotum. 



/>c/i = nuchal organ, corresponding to nch of Figs. 3, 8, and 10. 

 ,, 111. The same from the side. 



The labium is not visible in a side-view. 



mx = maxilla. 



md — mandible. 



ant = antenna. 



/( = head. 



KcA = nuchal organ. 



prt = pronotum. 



