Phrase on birth record 1902

[dlshook]

Please assist in translation of birth record-the record was created November 2, 1902 and I just want to confirm that the birth date for my grandfather is truly October 30, 1902. Here's the phrase that I can't seem to translate : "del di trenta, del perduto mese". I'm thinking it should be "last" month, not "lost" month? Or that the "perduto" should be "preduto"? I've attached a screen shot document.

Thanks for any help on this!
Dana Napoli Shook

[mmogno]

@Dana Napoli Shook

The birth record was created November 2, 1902 and the birth date for your grandfather is truly October 30, 1902. The phrase "del dì trenta, del perduto mese" is exact.