loo Amials Entomological Society of America [Vol.1, 



EXPLANATION OF PLATE V. 



Fig. 13. Ventral view of saws spread apart, showing the opening of the 

 colleterial sac duct at d: tp, triangular chitinous plate to which bundles of mus- 

 cles attach; vf, ventral fold; dl, lobes that are in continuation with the colleterial 

 sac duct dorsally; tm, bundle of transverse muscles which leave the colleterial 

 sac duct dorsally and attach to the basal margin of the sheaths of the saw; 

 ch, chitinous intima of colleterial sac duct, to which the transverse muscle 

 fibres attach; t, teeth of saw. (xl2). 



Fig. 14. Cross section of the colleterial sac duct near its opening, show- 

 ing the attachment of some of the transverse muscles to the dorsal wall of the 

 duct: tm, transverse muscle bundles; n, nucleus of epithelial cell; ch, chitinous 

 intima. (xl75.) 



Fig. 15. Transverse section of colleterial sac duct nearer to the sac than 

 figure 14, showing the ventral median-groove: n, nucleus of epithelial cell; ch, 

 chitinous intima. (xl75.) 



Fig. 16. Last stemite showing the vaginal orifice, vo. (x63^.) 



Fig. 17. Posterior view of colleterial sac: cd, colleterial gland duct; ccd, 

 common colleterial gland duct; o, opening of common colleterial gland duct 

 into the colleterial sac; tm, bundles of transverse muscles which leave the duct 

 and attach to the basal margin of the sheaths of the saws ; /, lobes that are in con- 

 tinuation with the colleterial sac duct dorsally. 



Fig. 18. Diagram showing the common oviduct, spermatl.eca and colle- 

 terial sac with their openings: cod, common oviduct; sp, heart-shaped part of 

 spermatheca; /, funnel-shaped part of spermatheca; o, opening of spermatheca 

 into the dorsal wall of the common oviduct; chp, triangular chitinous plate; cs, 

 colleterial sac; ccd, common colleterial gland duct opening into the colleterial 

 sac; d, duct of colleterial sac, which opens between the saws; s, opening of com- 

 mon oviduct; arrows in the common oviduct indicate the path which the eggs 

 take; the eggs thus pass beneath the opening of the spermatheca at o, and, 

 after passing out of the vagina, are received by the saws at s. (x20.) 



