▁of ▁cha os . ▁ ▁- ▁The ▁promised ▁land . ▁ ▁See ▁also ▁ ▁M ister o ▁Buff o ▁by ▁D ario ▁Fo ▁ ▁References ▁ ▁External ▁links ▁English ▁translation ▁of ▁the ▁ 1 9 2 1 ▁version ▁ 1 9 1 8 ▁version ▁▁ 1 9 2 1 ▁version ▁▁ ▁Category : 1 9 1 8 ▁plays ▁Category : Pl ays ▁by ▁Vladimir ▁May akov sky <0x0A> </s> ▁Cop el atus ▁e uc rit us ▁is ▁a ▁species ▁of ▁div ing ▁be et le . ▁It ▁is ▁part ▁of ▁the ▁genus ▁Cop el atus ▁in ▁the ▁sub family ▁Cop el at inae ▁of ▁the ▁family ▁D yt isc idae . ▁It ▁was ▁described ▁by ▁F éli x ▁Gu ign ot ▁in ▁ 1 9 5 2 . ▁ ▁References ▁ ▁Category : C op el atus ▁Category : Be et les ▁described ▁in ▁ 1 9 5 2 <0x0A> </s> ▁E ye ▁movement ▁includes ▁the ▁volunt ary ▁or ▁invol unt ary ▁movement ▁of ▁the ▁eyes , ▁helping ▁in ▁acqu iring , ▁fix ating ▁and ▁tracking ▁visual ▁stim uli . ▁A ▁special ▁type ▁of ▁eye ▁movement , ▁rapid ▁eye ▁movement , ▁occurs ▁during ▁RE M ▁sleep . ▁ ▁The ▁eyes ▁are ▁the ▁visual ▁org ans ▁of ▁the ▁human ▁body , ▁and ▁move ▁using ▁a ▁system ▁of ▁six ▁mus cles . ▁The ▁ret ina , ▁a ▁special ised ▁type ▁of ▁t issue ▁containing ▁phot ore cept ors , ▁sens es ▁light . ▁These ▁special ised ▁cells ▁convert ▁light ▁into ▁electro chem ical ▁signals .