This paper examines two poetical manuscripts, Marc. Gr. IX 22 (Lycophron with scholia and Apollonius Rhodius) and Marc. Gr. IX 10 (seven Euripidean plays with scholia), owned and partially copied by Marcus Musurus, their place in the respective textual traditions and some interesting (and sometimes unexpected) variants that can be ascribed to Musurus himself: this testifies once more to Musurus’ wide-ranging and active acquaintance with classical texts. On the philological niveau, the scholia on Euripides’ plays as published by Apostolis in 1534 and those in Marc. Gr. IX 10 share a great amount of singular variants.