Editing Millipede (section)

===Head===
The head of a millipede is typically rounded above and flattened below and bears a pair of large [[mandible (arthropod)|mandibles]] in front of a plate-like structure called a [[gnathochilarium]] ("jaw lip").<ref name=SierwaldBond2007/> The head contains a single pair of [[Antenna (biology)|antennae]] with seven or eight segments and a group of sensory cones at the tip.<ref name=SierwaldBond2007 /> Many orders also possess a pair of sensory organs known as the [[Organ of Tömösváry|Tömösváry organs]], shaped as small oval rings posterior and lateral to the base of the antennae. Their function is unknown,<ref name=SierwaldBond2007 /> but they also occur in some [[centipede]]s, and are possibly used to measure humidity or light levels in the surrounding environment.<ref name="Biology of Centipedes">{{cite book|last=Lewis|first=J. G. E.|title=The Biology of Centipedes|year=2008|publisher=[[Cambridge University Press]]|location=Cambridge|isbn=978-0-521-03411-1|pages=110–111|edition=Digitally printed 1st paperback version.}}</ref>

Millipede eyes consist of several simple flat-lensed [[Simple eye in invertebrates#Simple eyes in arthropods|ocelli]] arranged in a group or patch on each side of the head. These patches are also called ocular fields or ocellaria. Many species of millipedes, including the entire orders [[Polydesmida]], [[Siphoniulus|Siphoniulida]], [[Glomeridesmida]], [[Siphonophorida]] and [[Platydesmida]], and cave-dwelling millipedes such as ''[[Causeyella]]'' and ''[[Trichopetalum whitei|Trichopetalum]]'', had ancestors that could see but have subsequently lost their eyes and are blind.<ref name=MyrEncylopedia/>