Two more enemies were revealed in Shonen Jump, but first someone would have to release the scan images of them. So in the meantime here are their descriptions.
イヴァーラス or Ivaras (Ivahlas)
Ivaras is a large sized enemy who appears in the Moatoob Relics. It is an ancient guardian of the relics site. It looks kinda like a cross between Ill Gill and Svaltia. It carries a large axe, but it doesn't look like the Svaltia Tomahawk. It swings this axe that hits a wide radius.
ボラ・ブリーマ or Bora Brima (Bora Burima)
It's a large sized monster that exists on the grassy plains. They have two arms and two legs. In Shougai's opinion, the base model for this enemy looks like an Astark. The back of the body is covered by a hard shell. It has something that looks like barnacles protruding from it. It can curl himself up like an armadillo and ram right into you.
[via shougai]