18.104.22.168. Displaying the glands and antennal lobes (Plates 9, 10)
1. Lift out the glands with the point of a needle.
2.1. the form of the hypopharyngeals, like strings of onions;
2.2. the quite different branched structure of the postcerebrals;
2.3. the mandibular glands.
Beware of rupturing them and thus losing their contents.
3. Cut away the frons down to the level of the antennae.
4.1. the antennal lobes,
4.2. nerves running into the antennae.
They can be seen if the head is lying in a favourable position, as in Plate 10.