[2.] As in warden of the marches.
[ CHAPTER IX.]
The i-Declension and the u-Declension.
The i-Declension. (See [§ 58].)
[43.]
The i-Declension, corresponding to the group of i-stems in the classical Third Declension, contains chiefly (a) masculine and (b) feminine nouns. The N.A. plural of these nouns ended originally in -e (from older i).
(a) Masculine i-Stems.
[44.]
These stems have almost completely gone over to the a-Declension, so that -as is more common than -e as the N.A. plural ending, whether the stem is long or short. The short stems all have -e in the N.A. singular.