  We present discovery images, together with follow-up imaging and
spectroscopy, of two large separation gravitational lenses found by our survey
for wide arcs (the CASSOWARY). The survey exploits the multicolor photometry of
the Sloan Digital Sky Survey to find multiple blue components around red
galaxies. CASSOWARY~2 (or "the Cheshire Cat") is composed of two massive
early-type galaxies at z = 0.426 and 0.432 respectively lensing two background
sources, the first a star-forming galaxy at z = 0.97 and the second a high
redshift galaxy (z> 1.4). There are at least three images of the former source
and probably four or more of the latter, arranged in two giant arcs. The mass
enclosed within the larger arc of radius 11 arcsecs is about 33 x 10^{12} solar
masses. CASSOWARY~3 comprises an arc of three bright images of a z = 0.725
source, lensed by a foreground elliptical at z = 0.274. The radius of the arc
is about 4 arcsecs and the enclosed mass is 2.5 x 10^{12} solar masses.
Together with earlier discoveries like the Cosmic Horseshoe and the 8 O'Clock
Arc, these new systems, with separations intermediate between the arcsecond
separation lenses of typical strong galaxy lensing and the larger separation
cluster lenses, probe the very high end of the galaxy mass function.
