Banks To Supersede Butler

New Y.nk, Dea 21. The Herald editorinHy confirma the Htatoiuent.s ahveady innde that Banku ia to Biipersede Gen. Butler at Now ürleane. lio wlll oommand anarmy of 70,000 men. Ooeofthè objeote of thie expedition is tho capture of Mobile, aod müther to coiinturact nny Söheioes of Frauce io the' Southern Htutes, mid j to oo-operate iü opening t!io 1 hippi.