At least I would expect consistency between the Mythic Maps and the descriptions in the respective Map Locations section, so
p.106 (PDF), left column, Neliomi Sea: this name is clearly wrong, as the Late Lesser Darkness map on p.103 (PDF) clearly depicts the Neleomi sea.
p.112 (PDF), left column, Valind's Glacier: "... countless icebergs drift into the Neliomi Sea. ...". But the Great Darkness map on p.108 (PDF) clearly depicts the Neleomi sea.
Assuming, that the Mythic Maps are the basic resource, my first guess would be, that the use of Neliomi is a typo always and should be replaced with Neleomi.
But checking the Guide to Glorantha, I see, that it is the Neliomi Sea always. So it seems, that the Mythic Maps on (PDF) pp.97, 103, 108, and 11maybe3 need to be fixed.
Anyway, consistency between the Mythic Maps and the descriptions in the respective Map Locations section should be the goal.