occipitalis

noun

oc·​cip·​i·​ta·​lis äk-ˌsip-ə-ˈtā-ləs 

: the posterior belly of the occipitofrontalis that arises from the lateral two-thirds of the superior nuchal lines and from the mastoid part of the temporal bone, inserts into the galea aponeurotica, and acts to move the scalp