When his eyes looked at the map in his hands that covered a third of the continent, Emery saw that there were a total of 50 marks indicating the existence of the Abyss nest. However, there was an empty spot on the map.
That blank spot existed because Rayne didn't return to the main base and report her findings at the previous gathering, so the map didn't include the Abyss nests found within the scope of her search area.
During her exploration, Rayne had found six Abyss nests around this area before she ran into some trouble with Arcana. Hearing that, Emery assumed that there were still several more not yet found Abyss nests further north.
Even so, the amount of Abyss nests that needed to be cleared would definitely be still not enough to share for two squads. Hence, he needed to think of another creative solution.