18.104.22.168. The glands
1. Remove the proboscis.
2. Remove the wall of the occiput and postgenae, by the same means as in the preceding dissection.
3. Lift off the back wall of the head cut down the tentoria, to give a clear view.
4. Clear the tentoria in the normal way.
5. Identify the structures flagged in the plate 13. The postcerebral glands are more translucent than the hypopharyngeals; note their branching form.