Branes, orbifolds and the three dimensional N=2 SCFT in the large N limit

We study the correspondence between the large N limit of N = 2 three dimens ional superconformal field theories and M theory on orbifolds of AdS(4) x S -7. We identify the brane configuration which gives C-3/Z(3) as a backgroun d for the M theory as a Brane Box Model or a (p, q) web model. By taking th e orbifold projection on the known spectrum of Kaluza-Klein harmonics of su pergravity, we obtain information about the chiral primary operators of the orbifold singularities.