Alveus Atrum Memoria

I did this one 5 min ago, okay this is what it is. A Memoria is created when someone dies, but they don't move on, Memoria, in short, are the memories of dead people. Depending on the memories they can either be good or bad. Memoria like this one are created from bad memories, grudges, embarrassment and sadness.  They can often be violent if they take a solid form, but the majority of the time they are in a spectral form and just go around scaring people.
Heh, I actually wrote down the story, cool. Memoria, of all kinds, are copyrighted to me.
I'll do a good Memoria later. By the way, I don't take Latin so I really don't care if the Title isn't grammatically correct. The individual words translate into something like empty dark memories. Comment, please?