Creating a class that instantiates via a metaclass: how do I create this class with type?

The creation of a class via declaration of the form

class Simple(Base):
    x=0

is equivalent, I believe, to using a type statement:

Simple = type( 'Simple', (Base,), dict( x=0 ) )

Is there a type statement equivalent to the following declaration?

class Simple(Base,metaclass=Meta):
    x=0
    def __init__(self,x):
      self.x = x

I've tried

def s2_init(self,x): 
  self.x = x

S2 = type( 'Simple', (Base,), dict( x=0, __metaclass__=Meta , __init__=s2_init) )

but Meta does not get used when S2 is instantiated (this behaviour, __metaclass__ being ignored, is as expected from the documentation).