Fig. 10, Lower enlarged end of œsophagus, where entering the
stomach, viewed from one of the sides bearing the discs
of teeth; _a_, upper cut off end of œsophagus; _b_, the
lower end and natural opening; _c_, thickened rim, having a
somewhat beaded structure.
11, The same; diagram giving a transverse section of the
above in the line of the discs of teeth; _c c c c_, four
thickened beaded edges; _e e_, two other but narrower and
less prominent beaded edges; _d d_, discs of teeth; _f_,
rows of fine bristles; the almost double row of bristles on
each side under (_d_) is not of course seen in this section.
12, Lower end of œsophagus viewed from a position at right
angles to that in fig. 10; or from the side _e_, of the
diagram, fig. 11; the two discs of teeth are consequently
shown in profile; _a_, upper cut off end of œsophagus; _b_,
lower natural end; _c_, _c_, thickened edges; _e_, narrower
thickened edge, projecting towards the beholder; _d_, disc
of teeth seen in profile.
13, Portion of one of the cirri; _a_, lower segment of pedicel;
_b_, upper segment, supporting the two rami.
14, Segments of one of the rami much enlarged; _a_, thickened
shield-like portion of membrane.
15, Ovum, (thirty-five times the natural size.)
16, Egg-like larva in the first stage, on same scale.
17, " " in the second stage, on same scale.
18, Larva in the last or pupal stage, on four times the scale
of fig. 15-17; _a_, antennæ; _b_, apodeme and eyes; _c_,
abdominal bristles. A male would have been developed from
this pupa.
19, Male on same scale as the pupa, fig. 18; _a_, three
terminal segments of the antennæ of the pupa; _d_, orifice
of the sack.