  We report the discovery of 4 candidate intracluster globular clusters (IGCs)
in a single deep HST ACS field of the Virgo Cluster. We show that each cluster
is roughly spherical, has a magnitude near the peak of the Virgo globular
cluster luminosity function, has a radial profile that is best-fit by a King
model, and is surrounded by an excess of point sources which have the colors
and magnitudes of cluster red giant stars. Despite the fact that two of our IGC
candidates have integrated colors redder than the mean of the M87 globular
cluster system, we propose that all of the objects are metal-poor with [M/H] <
-1. We show that the tidal radii of our intracluster globulars are all larger
than the mean for Milky Way clusters, and suggest that the clusters have
undergone less tidal stress than their Galactic counterparts. Finally, we
normalize our globular cluster observations to the luminosity of intracluster
stars, and derive a value of S_N ~ 6 for the specific frequency of Virgo
intracluster globular clusters. We use these data to constrain the origins of
Virgo's intracluster population, and suggest that globular clusters in our
intracluster field have a different origin than globular clusters in the
vicinity of M87. In particular, we argue that dwarf elliptical galaxies may be
an important source of intracluster stars.
