NO. 8 



INSECT ABDOMEN SNODGRASS 



143 



Ecd, ectoderm. 



EMsd, somatopleure of mesoderm. 



Epm, epimeron. 



Eppt, epiproct, eleventh abdominal 



tergum. 

 Eps, episternum. 

 ET, tgg tube of ovary. 



Frc, furcula. 



Fu, furca, endosternum. 



GC, genital chamber (bursa copula- 



trix). 

 GCls, germ cells. 

 Gd, gonad. 



gmcl, muscle of gonapophysls. 

 Gon, gonapophysis. 

 Gpr, gonopore, ostium oviductus. 

 Gpr' , primary median gonopore of 



female. 

 Gr}n, germarium of ovary. 



Ht, heart. 



I-XI, abdominal segments. 

 IMsd, splanchnopleure of mesoderm. 

 IS-XS, abdominal sterna. 

 IT-XIT, abdominal terga. 

 IXV , venter of nintli abdominal 

 segment. 



LB, limb basis. 

 Let, lancet (first valvula). 

 Id, laterodorsal area. 

 le, external lateral muscle. 

 li, internal lateral muscle. 

 Lsp, lamina spiracularis of eighth 

 tergum. 



Mb, intersegmental membrane. 

 Mcls, muscles. 

 Msd, mesoderm. 



Odl, oviductus lateralis. 



Opr, oviporus. 



OS, occlusor muscle of spiracle. 



Ovl, ovariole. 



Ovp, shaft of ovipositor. 



P, pleural, or podial, region of body. 



Papt, paraproct. 



Pcx, postcoxale. 



Pdcl, ovariole pedicel. 



piv, posterior intervalvula. 



Ph, phragma. 



pi, pleurite. 



Plstn, pleurosternal plate. 



PN, postnotum. 



pnvl, pons valvularum. 



Proc, proctodaeum. 



PsnSc, poison sac. 



pt, paratergite. 



Ptgr, proctiger. 



ra, ramus of valvula. 



rivl, ramus of first valvula. 



rivli, inner ramus of first valvula. 



rivio, outer ramus of first valvula. 



rsvl, ramus of second valvula. 



Reef, rectum. 



S, definitive sternum. 



Sex, subcoxa. 



smel, muscles of stylus. 



Sp, spiracle. 



Spr, spermathecal pore. 



Spt, spermatheca. 



SptD, spermathecal duct. 



St, stipes. 



stl, stylet (slender distal part of united 



second valvulae). 

 Stn, primitive sternum. 

 Stng, sting. 

 Sty, stylus. 



NIR, neural ridge. 



Od, oviduct. 



Ode, definitive oviductus communis. 

 Ode', primary rudiment of median 

 oviduct. 



T, tergum. 



td, dorsal transverse muscle. 



TF, terminal filament of ovariole. 



Tlpd, telopodite. 



Tin, tympanum. 



tv, ventral transverse muscle. 



