58 
Transactions of the Royal Society of South Africa. 
open posteriorly into the atrium (18) ; the uterine ducts are glandular and 
the secretion is poured into the uteri. In one of the two cut specimens 
there is a distinct dorsal outgrowth (19) from the atrium; it is in the 
position of the bursa copulatrix of other species, but in the present species 
it is lined by the same tall glandular cells which line the rest of the 
Fig. 3. — Eeconstruction of the genitalia. 1 = opening of the two vasa deferentia ; 
2 = vesicula ; 3 = " granular ' ' vesicle ; 4 = ductus ejaculatorius ; 5 = cavity of penis-sheath ; 
6 = chitinous end of penis ; 7 = ovarium ; 8 and 9 = muscular part of oviduct ; 10 = recepta- 
eulum ; 11 = oviduct; 12 = vitelline ducts; 13 = accessory female glands; 14 = ductus 
communis; 15 = vagina; 17 = common genital aperture; 18 = atrium; 19 = vestigeal 
bursa (?) ; 20 = atrium, in which lies the base of the penis ; 21= uterine glands ; 22 = uteri. 
atrium, and it moreover has no muscle fibres surrounding it ; also there is 
a vagina ; so the outgrowth (19) is clearly not a functional bursa, although 
it may possibly represent a vestigeal bursa. 
In the above there are several points worth noting. 
Firstly, although the whole organization of the animal indicates a close 
