1. Iter, itineris, n., _way_, is inflected regularly throughout from the
stem itiner-.

2. Supellex, supellectilis, f., _furniture_, is confined to the Singular.
The oblique cases are formed from the stem supellectil-. The ablative has
both -Ä« and -e.

3. Jecur, n., _liver_, forms its oblique cases from two stems,--jecor- and
jecinor-. Thus, Gen. jecoris or jecinoris.

4. Femur, n., _thigh_, usually forms its oblique cases from the stem
femor-, but sometimes from the stem femin-. Thus, Gen. femoris or feminis.

General Principles of Gender in the Third Declension.

43. 1. Nouns in -ō, -or, -ōs, -er, -ĕs are Masculine.

2. Nouns in -ās, -ēs, -is, -ys, -x, -s (preceded by a consonant); -dō, -gō
(Genitive -inis); -iō (abstract and collective), -ūs (Genitive -ātis or
-Å«dis) are Feminine.

3. Nouns ending in -a, -e, -i, -y, -o, -l, -n, -t, -ar, -ur, -Å­s are
Neuter.

Chief Exceptions to Gender in the Third Declension.

44. Exceptions to the Rule for Masculines.

1. Nouns in -ō.