Another over-dress of the Romans was the paenula, a cloak akin to the poncho of the modern Spaniards and Spanish Americans, i.e.
As derived not from the paenula but from the lacerna or birrus (see Cope, footnote).
The paenula, which was the garment most commonly worn, especially by soldiers when engaged on peace duties, was an oblong piece of cloth with a hole in the centre for the neck; a hood was usually attached to the back.
The chasuble, like the kindred vestments (the 48364;Xbvtov, &c.) in the Eastern Churches, is derived from the Roman paenula or planeta, a cloak worn by all classes and both sexes in the GraecoRoman world (see Vestments).
There is some difference of opinion as to the derivation of the vestment in the latter case; the Five Bishops (Report to Convocation, 1908) deriving it, like the cope, from the birrus, while Father Braun considers it, as well as the cope, to be a modification of the paenula.'
Moreover, it would be further necessary to prove that the birrus, in contradistinction to the paenula, was always open in front; whereas, per contra, the paenula, both as worn by soldiers and in ordinary life, was, like the modern Arab burnus, often slit up the front to the neck.