No, you can't replicate a snapshot.  When you create a replica a hidden snapshot is created for you.  So the effect is the same as if you replicated a snapshot. 
I have a volume with a number of snapshots, and I want to copy the snapshots to another storage group; that is, my end goal is a set of volumes on the destination storage group, each of which is a clone of the respective snapshot. I know I can clone each snapshot on the source storage group and then use replication to move each volume to the destination storage group, but because of limited free space on the source group I would have to do this one snapshot at a time which is going to be slow and painful. I was hoping to replicate the volume, *including* the snapshots, over to the destination volume, then clone the replicated snapshots.  However, there doesn't seem to be any way in the GUI to make the replication include the snapshots. Is there any way - from the command line, perhaps - to make replication include existing snapshots?  Or some better way to achieve my goal? If it makes any difference, the source storage group contains two model PS4000 arrays, and the destination is a single model PS6100 array.
Can I replicate snapshots?