he 16*5 os, (Fig, 1G) nta&e shows only an enlarged v&gina* 
I 
and at £0,0 cv. (Kig* 11)* the whole genital cotd is filled by tha 
.Fallopian tubes and eliHai horns and ihj ©oil of the uterus la 
complete* apparently aa in tb adult* The rote still joins the 
posterior end of the ostium. the vagina ha:; enlarged tremendously 
in lusssn. but net in wall thickness. The vestiges of the Besinal 
vesicle honologuas are in tb thick walls of the cervix uteri and 
anterior part of the vagina, Ahe dual origin of the vagina is still 
evident at its posterior end where it io still divided into two back¬ 
ward projecting bays in ite dora&l part »b i i ~ the ventral part opens 
to the vestibule aa a single tube aft r receiving th© olffian ducts 
as before described. 
In naiesi- The *&lleria& ducts are porter in naloc, smaller 
than 2.6 cm* (Fig. 1?) than* in females of like eixe and do not yet 
reach the sissus. *hero see a t be a sexual d foresee in the rate 
of growth or formation of then# ducts even in stages that appear 
sexually indifferent externally and in which there are no inter¬ 
stitial calls in either sox. (Lillie, *17, *23; Basco®, ’S3) 
The duots roach the sinus by the 3*G oa. (Fig* 13) stage and 
are in all r© ;pects like the feisale ones except for want of luster* 
in the anterior and extreme posterior ends* -nd the fact t : at they 
appear to open to the Wolffian ducts where they are open t > the 
sinus. 
The ducts arc solid in r.my places by the 6,1 on, (Fig, 15) 
stage and show signs of de ©n ration. The connection of th rate 
testis to the ostium i© larger than in the female. The remnant 
of the duct is in a secondary ridge on the genital oord, The ducts 
fuse to a single ut rua ra»ouliana but smaller than the female 
uterus. They are double in the cervix region and single in the 
vagina region back nearly to the sinus* where they become double* 
and join the corresponding *oIff ion ducts* then both join the sinus 
