£ 3 . 
t he phallus an a pouch, fi .lei «ith aplihallua, arid roofod ovor by the 
recurved tip of the pialka» which flutter**? out at tha 15.5 e». stags • 
Tho poriaous widens a little by tbs 5*1 oo. stag*, (Fi... 6). but 
thereafter it just ko^pa pace- sith too growth of tho surrounding parts 
«nd > oto relatively narrower fro the H.5 c?. fttage on. The vulva 
enlarges so sishai, but, while at 5.1 oc.. it entert i:i as ant ro-dorsal 
dirootioa, its floor gradually flatten? out usd by the 15." or., stage 
(Fig. 9). it leads acarly horizontal y into the vestibule, vtile at 
20*0 <ua. it is horizontal (Fig. 11). Tfco vulva ke p pace with the 
growth o- the surrounding structure®. 
The bulbc-vestibular {leads gro* oat laterally fro* the cider, 
of the 3 nut where the vulva leads into the vestibule, and they begin 
to branca at the ?.£ as*. ota. «? ans there aft r boeose ncro branch c-1 and 
?5«aii larger, till at 15 .f cr, they penetrate beyond the saccular coat 
of the vestibule, r-ncio «<J is a ouacular coat of their own air covered 
by the cr rordiusr o <: the constrictor rnlvue auscle. they o ntirue to 
lacre so relatively to the 2%i e~. at&ge (ki... 11). Their duet? opaa 
to th" veatib 1« far 1 h r vantrally c» the sides cf the v ret i bn Is than 
do thair ho ologuaa is the siala. 
the Y-«tifeul* bsoewts relatively nbortor end larger in lunsci, 
and becomes alias t double by reason of tvs ri;g.*a, era in each lateral 
ivall, that almost s. rpurat a longitudinally wrinkled derail corridor, 
which is lai&r stages l?ads atraig. t for*nr int the vt; ins as* ir? 
15.u os. fossa 1* (?ir. 9) frors a ventral corridor, loading, ferrar to 
the urethra proper. 
/.t 5.1 os. the vagina and WolffIan duct© open intc the sine®, 
one behind too other, from ths -ails of a ridge in the dors**! sinu« 
vail, rotmi a tongu: c r tissue a* described under ?4*ll*rian duets, 
\\ 
asd the vagina baa two baoWard projecting touches st It* posterior 
before it. 
end. By 5.0 c? 3 . (n^J. n) the Wolffian ducts .join th- vagina o •■ms 
