84 Annals of the South African Museum. 



different parts differed somewhat, doubtless owing to the different, 

 methods of preservation. 



Except as regards the accessory glands the genital organs resemble 

 those of Peripatopsis in their general appearance. The sausage- 

 shaped testes (te) are relatively stouter and shorter. They are bent. 

 only once in the shape of a hook and not irregularly twisted and 

 curved about as in Perijjatopsis, and they lie in the second third of 

 the body. They are connected with the ellipsoid seminal vesicles 

 {s.v) by a short, fine duct. Between the vesicles and the hind end 

 of the body the very long vasa deferentia (v.d) lie coiled up irre- 

 gularly in a thick mass. The common duct (V.D) of the vasa. 

 deferentia is rather short, but the paired ducts are very long, equal- 

 ling about twice the length of the body in the drowned specimen. 



The vas deferens passes over abruptly into a very muscular ductus- 

 ejaculatorius (d.ej), which forms a nearly straight, smooth, stout, 

 cylindrical tube of a brownish-yellow colour and about the same 

 thickness throughout. In both specimens this organ lay on the left 

 side of the body, but its posterior end passed below the left nerve- 

 cord to the exterior orifice. The right vas deferens passed near its- 

 posterior end under both nerve cords immediately in front of the 

 genital orifice to the left side of the body to enter the unpaired duct 

 soon after. The posterior loop thus formed is shown in fig. 15. 



Three sections passing through different parts of the ductus- 

 ejaculatorius are given in fig. 25, d.ej, and in fig. 27 to explain 

 its structure. The powerful muscular sheath is present throughout 

 its whole length but becomes considerably thinner near the anterior- 

 end. It encloses an inner tube with high columnar epithelium, 

 whose lumen is cruciform in transverse section in its posterior part, 

 for some little distance from the external orifice (fig. 27a) but. 

 becomes 5- to 6-rayed farther forward (fig. 27b) and finally merely 

 strongly compressed (fig. 25, d.ej). This latter is the condition in 

 the whole of the anterior region of the ductus and its inner epithelial 

 cells present here a granular, highly glandular appearance with 

 small nuclei at their basal ends, but there is no internal cuticular 

 lining. In the posterior region with 4- to 6-rayed lumen , (fig. 27) 

 the cells do not present a glandular appearance, and there is a. 

 distinct cuticula lining the inner tube. 



Fig. 28 represents a section through the loop formed by the 

 unpaired portion (V.D) of the vas deferens, cut along the line denoted 

 in fig. 15. The walls of the tube are thinner and enclose a much 

 larger lumen. The outer muscular sheath is not indicated in the 

 figure, as it is extremely thin. In fig. 25 the right vas deferens is- 



