248 MESSRS. HANCOCK AND EMBLETON ON THE ANATOMY OF DORIS. 
portion of same at the point where it receives duct from testis ; f, opake 
portion of mucus-gland connected with female channel ; g, semipellucid 
portion of same gland ; h, female channel leading to external orifice ; 
i, vagina leading from external orifice to spermatheca ; j, spermatheca ; 
k, duct from the same, which after passing into the mucus-gland, is joined 
to oviduct. 
Fig. 9. Generative organs, D. Johnstoni. a, testis; h, vas deferens; c, retracted 
penis ; d, oviduct as it leaves ovary ; e, dilated portion of oviduct ; f, point 
where it receives duct from spermatheca ; g, opake portion of mucus- 
gland ; h, semipellucid portion of same ; i, female channel leading to ex- 
ternal orifice ; j, vagina leading from external orifice to spermatheca ; 
k, spermatheca ; I, duct from the same ; m, accessory spermatheca con- 
nected with ditto. 
Fig. 10. Generative organs, partially exserted, D. Johnstoni. a, lip of common orifice ; 
b, male intromittent organ ; c, orifice leading to female parts ; d, vaginal 
orifice leading to spermatheca ; e, large penis-like organ furnished with a 
stiletto ; y*, sac containing stiletto. 
PLATE XV. 
Fig. 1. Stiletto in its pouch, D. tlohnstoni, seen in the compressor, a, portion of 
penis-like organ with which the pouch is connected ; h, outer pouch of 
stiletto ; c, inner pouch of same ; d, stiletto ; e, sheath of same ; f, duct 
leading to large glandular sac in connection with stiletto. 
Fig. 2. Extremity of penis-like organ with stiletto partially exserted. a, apex of 
penis-like organ ; b, stiletto ; c, c, sheath of same. 
Fig. 3. Generative organs, D. coccinea. a, testis ; b, vas deferens ; c, retracted penis ; 
d, oviduct as it leaves ovary ; e, dilated portion of same ; contracted 
portion of same where it is united to testis ; g, point at which it is united 
to duet of spermatheca; A, opake part of mucus-gland; i, semipellucid 
part of same ; j, female channel leading to external orifice ; A*, vagina ; 
/, spermatheca ; m, duct from same ; n, accessory spermatheca. 
Fig. 4. Generative organs, D. tubercuLata, Verany. a, compact portion of testis; 
h, tubular portion of same ; c, vas deferens ; d, retracted penis ; e, dilated 
portion of oviduct ; f, the point of its union with duct from compact por- 
tion of testis, and near to which it likewise receives duct from androgynous 
organs ; g, opake portion of mucus-gland ; h, semipellucid portion of 
same ; i, female channel leading to external orifice ; j, vagina leading from 
exterior to spermatheca / ; m, duct from spermatheca ; n, accessory sper- 
matheca. 
Fig- 5. Generative organs, D. repanda. «, testis ; b, vas deferens ; c, retracted penis; 
d, oviduct as it leaves ovary ; e, dilated portion of same ; f, contracted 
