from appearances alone; "irrigation often produces bumper crops from apparently desert land"; "the child is seemingly healthy but the doctor is concerned"; "had been ostensibly frank as to his purpose while really concealing it"-Thomas Hardy; "on the face of it the problem seems minor"
If something is seemingly the case, you mean that it appears to be the case, even though it may not really be so. A seemingly endless line of trucks waits in vain to load up. = apparently