arrays of numeric?

I'm running 6.5.1 on FreeBSD, and I'm trying to create a table with an
array of numerics. I do this:

test=> create table test (num numeric(10,2)[]);

and I get this:

ERROR: Unable to locate type name '_numeric' in catalog

I've hunted around in the documentation, but I've found nothing saying this
is _not_ possible. Am I missing something here?