Definition and context of term in Civil Records San Miguel el Alto, Jalisco

Page 170 (of 176) in the Civil Birth Records for San Miguel el Alto, Jalisco, the following entry refers to "indio" but I cannot determine if it says "no indio" or "ni indio" . . . or why this is referenced in all of the civil records in this book/record:

Entry #581, 21 Dec 1884, birth of Maria Espectacion Avalos (parents Ramon Avalos & Jacinta Plasencia).

In another book (1883) from the same municipality, I found an entry that read "no indigena." Does anyone know the exact meaning of this term and why it was included in these records?

I know the literal translation (not indigenous), but is this what was intended? Did I read it incorrectly? Does anyone know why this was an important distinction to document during this time period?

I was hoping this line of my family was indeed indigenous, so I'm hoping I misread or misinterpreted.

Thanks for any help, Roxanne Ocampo