Édouard Stephan discovered NGC 3867 = St XIII-66, along with NGC 3857, 3859, 3864 and 3868, on 23 Mar 1881. His position matches UGC 6731.

300/350mm - 13.1" (2/25/84): faint, small, brighter than NGC 3857 and 3859 to the NW.

400/500mm - 17.5" (3/12/88): faint, small, oval ~N-S, bright core. Member of the galaxy cluster AGC 1367 with NGC 3868 2.7' N.

Notes by Steve Gottlieb