.fseventsd............

I have a MacBook Pro. On a recent scan with Symantic, it turned up about 80 files beginning with this set of letters .fseventsd, followed by a series of zeros, followed by a combination of letters and numbers, beginning with about 4 letters/numbers and proceeding towards the end of the list to about 7 or 8. I then get the message "Not fully scanned. Did not have permission of open" after each of the files. Can anyone tell me what these files do, how to remove the "Not fully scanned....", and/or how to delete them and whether they ought to be deleted?  I'm concerned that a virus may be lurking somewhere among them.

 

Thank you