Ggreetings!
I've seen this pentagram in a number of places... the most recent was referenced in "The Goetia of Dr. Rudd" on page 434. The passage cites its origin to be in Sibleys Goetia, Wellcome MS 3203 circa 1792.
Noodling around the internet through Google I came up with this:
http://www.angelfire.com/nt/dragon9/PENTAGRAM.htmlIt has a paragraph telling what the words mean...though this is unsubstantiated...at least for now.
I will continue to search...
"The words on the seal have the following meaning:
Abdia - I conjure thee in secret, O Spirit!
Ballaton - Come forth from thy abode and speak clearly in my speech.
Bellony - Put forth thy might and discover unto me the knowledge and power in thy keep.
Halliy - Answer in the inward silence all of my questions without fail.
Halliza - Assume and show forth unto me thy form of divine perfection.
Soluzen - Open unto me thy secret door and fulfill me of my purpose!"
This was taken from that website. I cannot verify its veracity!