Syrius
Could not find Syriumque in Logeion dictionaries.
Syriumque Proper-name adjective: neuter vocative singular, Proper-name adjective: masculine genitive plural, Proper-name adjective: masculine accusative singular, Proper-name adjective: neuter genitive plural, Proper-name adjective: neuter nominative singular, Proper-name adjective: neuter accusative singular of Syrius
Sȳrĭus, a, um, v. Syria, A.
Sȳrĭus, a, um, v. Syros.
1. Syrius, a, um, s. Syrī.
2. Sȳrius, a, um, s. Sȳros.
1 Sўrĭus, v. Syria.
2 Sўrĭus, a, um (Σύριος), de Syros : Cic. Tusc. 1, 38 ; Plin. 33, 158.