A. Anus. _a._ Dorso-lateral horn of white matter in brain. _a.g._ Accessory
gland of male (modified accessory leg gland). _at._ Antenna. _at.n._
Antennary nerve. _b._ Ventro-lateral horn of white matter of brain. _b.c._
Body-cavity. _bl._ Blastopore. C. Cutis. _c._ Postero-dorsal lobe of white
matter of brain. _c.g._ Supra-oesophageal ganglia. _cl._ Claw. _c.m._
Circular layer of muscles. _co._ Commissures between the ventral
nerve-cords. _co.2._ Second commissure between the ventral nerve-cords.
_co_{1}. 2. Mass of cells developed on second commissure. _cor._ Cornea.
_c.s.d._ Common duct for the two salivary glands. _cu._ Cuticle. _d._
Ventral protuberance of brain. _d.l.m._ Dorsal longitudinal muscle of
pharynx. _d.n._ Median dorsal nerve to integument from supra-oesophageal
ganglia. _d.o._ Muscular bands passing from the ventro-lateral wall of the
pharynx at the region of its opening into the buccal cavity. E. Eye. E.
Central lobe of white matter of brain. _e.n._ Nerves passing outwards from
the ventral cords. _ep._ Epidermis. _ep.c._ Epidermis cells. F.1, F.2,
_&c._ First and second pair of feet, &c. _f._ Small accessory glandular
tubes of the male generative apparatus. F._g._ Ganglionic enlargement on
ventral nerve-cord, from which a pair of nerves to foot pass off. _f.gl._
Accessory foot-gland. F._n._ Nerves to feet. _g.co._ Commissures between
the ventral nerve-cords containing ganglion cells. _g.o._ Generative
orifice. H. Heart. _h._ Cells in lateral division of body-cavity. _hy._
Hypoblast. _i.j._ Inner jaw. _j._ Jaw. _j.n._ Nerves to jaws. L. Lips. _l._
Lens. _l.b.c._ Lateral compartment of body-cavity. _le._ Jaw lever
(cuticular prolongation of inner jaw lying in a backwardly projecting
diverticulum of the buccal cavity). _l.m._ Bands of longitudinal muscles.
M. Buccal cavity. M{1}. Median backward diverticulum of mouth or common
salivary duct which receives the salivary ducts. _me._ Mesenteron. _mes._
Mesoblastic somite. _m.l._ Muscles of jaw lever. _m.s._ Sheets of muscle
passing round the side walls of pharynx to dorsal body-wall. _od._ Oviduct.
_oe._ OEsophagus. _oes.co._ OEsophageal commissures. _o.f.g._ Orifice of
duct of foot-gland. _o.j._ Outer jaw. _op._ Optic ganglion. _op.n._ Optic
nerve. _or.g._ Ganglionic enlargements for oral papillæ. _or.n._ Nerves to
oral papillæ. _or.p._ Oral papillæ. _o.s._ Orifice of duct of segmental
organ. _ov._ Ovary. P. Pads on ventral side of foot. _p._ Common duct into
which the vasa deferentia open. _p.c._ Posterior lobe of brain. _p.d.c._
Posterior commissure passing dorsal to rectum. _p.f._ Internal opening of
nephridium into body-cavity. _ph._ Pharynx. _pi._ Pigment in outer ends of
epidermic cells. _pi.r._ Retinal pigment. _p.n._ Nerves to feet. _p.p._
Primary papilla. _pr._ Prostate. R. Rectum. _Re._ Retinal rods. R. _m._
Muscle of claw. _s._ Vesicle of nephridium. _s_{1}. Part of 4th or 5th
nephridium which corresponds to vesicle of other nephridia. _s.c._1. Region
No. 1 of coiled tube of nephridium. _s.c._2. Region No. 2 of ditto.
_s.c._3. Region No. 3 of ditto. _s.c._4. Region No. 4 of ditto. _s.d._
Salivary duct. _s.g._ Salivary gland. _sl.d._ Reservoir of slime gland.
_sl.g._ Tubules of slime gland. _s.o._1, 2, 3, _&c._ Nephridia of 1st, 2nd,
&c., feet. _s.o.f._ Terminal portion of nephridium. _s.p._ Secondary
papilla. _st._ Stomach. _st.e._ Epithelium of stomach. _sy._ Sympathetic
nerve running in muscles of tongue and pharynx. _sy´_. Origin of pharyngeal
sympathetic nerves. T. Tongue. _t._ Teeth on tongue. _te._ Testis. _tr._
Tracheæ. _tr.c._ Cells found along the course of the tracheæ. _tr.o._
Tracheal stigma. _tr.p._ Tracheal pit. _ut._ Uterus. _v.c._ Ventral nerve
cord. _v.d._ Vas deferens. _v.g._ Imperfect ganglia of ventral cord.