notocephalon
From ZooTerms (Dictionary of Invertebrate Zoology)
notocephalon (noun; Greek notos, back; kephale, head): (Arthropoda: Insecta) 1. In Notonectidae, the dorsal view of the head. 2. (Arthropoda: Chelicerata) In Arachnida, the dorsal shield of the prosoma.
