706 THE GENERATIVE ORGANS. 
At a still later period, when the nymph is covered with black 
hairs and is nearly mature, the paired oviducts, tube, still end 
in czecal ends, and are seen to be connected with the ovarian 
capsule by broad ligamentous bands. The termination of the 
parovarium in the substance of the ovary is also well seen in 
this stage of development. 
These observations lead me to the following conclusions : 
1. The paired oviducts are not developed from the genital 
cords, but, like the azygos oviduct, originate from the hypo- 
dermis. 
2. The paired oviducts are not homologous with the duct of 
the testis in the male, but, like the Miillerian ducts of the Verte- 
brate, originate from distinct embryonic structures. 
Fic. 102.—The utero-vaginal tube and oviduct on the fifth day of the pupa stage. 
ov, rudimentary oviduct ; 0, ducts of the parovaria ; 7s, receptacula seminis ; 
v, vagina. 
3. The parovaria correspond with the vasa efferentia and 
vas deferens, and are part of the primitive gonad. 
The investigation of the condition of the gonads and their 
ducts in Hermaphrodite Insects is of great importance in rela- 
tion to these views. Unfortunately the information on this 
subject which we possess is too small to allow any definite con- 
clusions to be drawn from the phenomena of hermaphrodism. 
The rarity of such forms is well known, and those who possess 
them seldom allow a specimen to be dissected. With the 
exception of Tetens [834], I know no author who has described 
the internal organs of hermaphrodites in detail, and, unfortu- 
nately, the dissections made by him throw no light on the 
relations of the vasa efferentia and the oviducts. 
