(AGI) Rome, June 26 - European stock exchanges traded close toparity at mid-session on Thursday, but all eyes were onBarclays, whose shares were down 5.2 percent. The British bankplummeted after U.S. Federal authorities announced an enquiryinto alleged trading fraud. London and Milan were down 0.06percent, Paris 0.05 percent. Frankfurt was flat and Madrid up0.08 percent. . .