tihiX* in the aal* it appear# to epen directly into the r> nos fr * 
the aedial sides cf t«o grooves lateral to a s dian ridge cn the 
dorsal since wall* the froe-wartin resembles the feaals more *ban 
the sale in this rempwot. 
To tnrs tip the ftolfflan duot situati n it say bo £ id that: - the 
first sexuxl difference to appear is ia the relation o ureters to hft® 
ducts* t?p to 8.5 e*. t>;e ureters ccao off th® Swiftian lusts in both 
9 jX85* At 8.$ aa« the ureters in the fsraJLe cc>-« off the sinus an¬ 
terior is tho ducts, while in the male they cose off with the duets* 
The distance be tw e en the o?«ni ge of the ureters and duc^s cm the sinus 
wall t eis loryor in the ferule than a the aale and is twice as lcn& 
as In the &l e at about 10. 0 cm. this s *ual difference is maintained 
through the 80.0 ss« stage* foe fr#e-aart3o ia generally intermediate 
in cmditlor, but ***re naerly approximates the fmal«» 
The female has a aarrowin; of the ducts throughout, ap earing 
at about 5*1 os. and progressing* till, at 15* > 6®. the ducts &r*? 
interrupted anterior to the vagina re^^n, and entirely absent in ti e 
gonad rep,ion in s we oases , but present and continuous in that regien 
in others. This depencration p r oceed s till the ducts are present only 
in th^ utsru-; wal?, as solid stripe, and in the walla of the vagina, 
as isolated sin t* sag-sente in the anterior half ant ecntinuou: in the 
i 
other half, with loam only in the posterior one-third* 
In the male, tbsse ducts ret.i & connection with tbs tubules of 
the gonad through the cranial gr up ~seonepbrle in ule* and rete 
of the monad, which is early lost in tin female. The ducts continue 
to develop and i have a lawm ie th^ir anterior end*, and occupy 
the whole genital cord in ports where the CftUerian duct is generated* 
In the female the Banner of opening into the sinus differs from 
that In tfco mole, in that the ducts Join th > vagina before opening. into 
the sinus in the later stages, *fcile in the ssale they o en separately 
