Fig. 7. The anterior end of Fig. 6 enlarged; x 6. (From a drawing by Miss Balfour.) The dissection is viewed from the ventral side, and the lips, L., have been cut through in the middle line behind and pulled outwards, so as to expose the jaws, _j._, which have been turned outwards, and the tongue, T., bearing a median row of chitinous teeth, which branches behind into two. The junction of the salivary ducts, _s.d._, and the opening of the median duct so formed into the buccal cavity is also shewn. The muscular pharynx, extending back into the space between the 1st and 2nd pairs of legs, is followed by a short tubular oesophagus. The latter opens into the large stomach with plicated walls, extending almost to the hind end of the animal. The stomach at its point of junction with the rectum presents an S-shaped ventro-dorsal curve. A. Anus. _at._ Antenna. F.1, F.2. First and second feet. _j._ Jaws. L. Lips. _oe._ OEsophagus. _or.p._ Oral papilla. _ph._ Pharynx. R. Rectum. _s.d._ Salivary duct. _s.g._ Salivary gland. _sl.d._ Slime reservoir. _sl.g._ Portion of tubules of slime gland. _st._ Stomach. T. Tongue in roof of mouth. Fig. 8. _Peripatus capensis_, x 4; male. (From a drawing by Miss Balfour.) Dissected so as to shew the nervous system, slime glands, ducts of the latter passing into the oral papilla, accessory glands opening on the last pair of legs (enlarged crural glands), and segmental organs, viewed from dorsal surface. The first three pairs of segmental organs consist only of the vesicle and duct leading to the exterior. The fourth and fifth pairs are larger than the succeeding, and open externally to the crural glands. The ventral nerve-cords unite behind dorsal to the rectum. A. Anus. _a.g._ Accessory generative gland, or enlarged crural gland of the 17th leg. _at._ Antenna. _c.g._ Supra-oesophageal ganglia with eyes. _co._ Commissures between the ventral nerve-cords. _d.n._ Large median nerve to dorsal integument from hinder part of brain. F.1, 2, &c. Feet. _g.o._ Generative orifice. _oe._ OEsophagus. _oes.co._ OEsophageal commissures. _or.p._ Oral papilla. _p.d.c._ Posterior dorsal commissure between the ventral nerve-cords. _ph._ Pharynx. _p.n._ Nerves to feet, one pair from each ganglionic enlargement. _sl.d._ Reservoir of slime gland. _sl.g._ Tubules of slime gland. _s.o._1, 2, 3, _&c._ Segmental organs. _v.c._ Ventral nerve-cords. _v.g._ Imperfect ganglia of ventral cords. Figs. 9 and 10. Left jaw of _Peripatus capensis_ (male), shewing reserve jaws. (From a drawing by Miss Balfour.) Fig. 9. Inner jaw. Fig. 10. Outer jaw. PLATE 49. Figs. 11-16. A series of six transverse sections through the head of _Peripatus capensis._ Fig. 11. The section is taken immediately behind the junction of the supra-oesophageal ganglia, _c.g._, and passes through the buccal cavity, M., and jaws, _o.j._ and _i.j._