\n \ND PHYSIOLOGY 



1 lymcnnplera ;ind Some <>| IHT Ordo 



three pair- <>! V8 y>////w////y.w.v a dor 



ventral and an inner pair. The two inner val\e> h-rin a < hannel tin 

 which tin- rm^s arc con\ eyed. In Tet t i^nniida- ' I-'i^. - three 



3 4 5 x \al lu-ld to- 



gether by i 

 which, however, permit 



79. Abdomen of female beetk-, ( '<-r- 

 ambyx, in which the last three segments are 

 la an ovipositor. After KOLBE. 



I' I-. 80. Abdomen of a female midge, 

 Dasyncura leguminicola, to show the 

 pseudo-ovipositor. 



movements to take place. Most authorities have found that the 

 gonapophyses belong to the segmental series of paired appendages 

 are homodynamous with limbs and pertain commonly to abdominal 



FIG. 81. Ovipositor of Phasgonura. A, lateral aspect; B, ventral aspect; C, transverse 

 section; c, cerci; d, dorsal valve; i, inner valve; v, ventral valve. .The numbers refer to ab- 

 dominal segments. After KOLBE and DEVMF/. 



segments eight, nine and ten; though there are different vu-v. 

 regard to this. 



The ovipositor attains its greatest complexity in Hymcnoptcra. in 

 which it becomes modified for sawing, boring or stinging. In Sirex (Fig. 



