To take the bull by the horns -- I'd like
to suggest an etymology of "Paralatai". The only known source of "Euro-Iranian"
<l> is *ry/*ri, so let us suppose that the recorded form is not misspelt
but contains a genuine -l- < *-ry-. If we detach the collective <-ta->,
what remains is <parala-> < *pararya- (approximately). I can see two
alternative (but similar) analyses of that:
(1) *pari-a:rya- 'thoroughly Aryan/most
respectable' = *parya:rya- > *pælalæ- > *pæralæ- (note that liquid
dissimilation is normal in Modern Ossetic). Looks like a suitable name for the
Royal Scythians.
(2) *para-arya- 'outer/different Arya
(?)' = *para:rya- > *pæralæ- (less attractive semantically, but formally
possible).
Piotr