92 NILS HJ. ODHNER, MOLLUSCA. 
others (cf. SrimrotH 1891 and P. & F. Sarasin 1899). The largest teeth have a 
length of 0.17 mm. 
In the vicinity of the mouth debouch some glands in the median line of the 
foot, one pedal gland (fig. 46/) which is bent back upon itself, so that its posterior 
part is reflected foreward. It has a flattened appearance and is indistinctly divided 
all along. On the sides of the foot gland there emanate a pair of glands (s. d.), 
which SrmrorxH has called »Spinndriisen» and P. & F. Sarasry have named »Simroth- 
sche Driisen»>; these have the same structure as SrwrotrH describes, with a distal 
cylindrical muscular portion and the proximal, likewise cylindrical »white gland» 
(StmrotH), which are connected by a long, complicately winding, thread-like canal. 
The right-sided »spin gland» opened in connection with the penis and might perhaps 
Fig. 48. Female genital organs of Atopos australis(?). g. hermaphrodite gland; 
gl. albuminiparous gland; pr. prostata; r. rectum; r. 8. receptaculum seminis; 
sp. spermatocyst; v. vagina; v. d. vas deferens; 2 female genital orifice. 
be an appendix to it; the »white gland» (w.) exists also on that side, but the whole 
apparatus is somewhat thinner than the left-sided one. In the distal cylindric por- 
tion of both spin glands a short cartilagineous staff is encluded with a short point 
in its foremost abruptly rounded end. 
The genital organs (figs. 48, 49). The hermaphrodite gland (g.) occupies the 
anterior right part of the visceral mass and consists of some large lobes of a reddish 
brown colour. From these the hermaphrodite duct emerges as a narrow, winding 
canal. To this joins a short branch from a spermatocyst (sp.), composed of many 
small sacs. The hermaphrodite duct debouches into the oviduct, which is at this 
point furnished with two appendices, on the one hand an albuminiparous gland (g/.) 
of irregular shape with largely folded walls, strongly swelling in water, and of a 
milky white colour, on the other hand a narrowly lanceolate prostata (pr.). From 
this latter the vas deferens (v. d.) emerges in the shape of a very thin and straight, 
