Larva of Arzama obliquate Grote.–Found April 23rd, under the bark of a dead maple about three feet from the ground, where it had made for itself an oval cavity in the dust.

Head small and black; head and first four segments flattened above Ist segment black, edged with light brown and with a light brown dorsal stripe; remaining segments dull olivaceous brown, slightly pubescent,and having the greasy appearance of an Agrotis larva. No dorsal stripe back of Ist segment; Ist and 2nd segments project laterally over stigmata; immediately below the stigmata on each side is a faint, narrow, brown stripe, below which the color is much lighter. Anal segment with a fleshy fold slightly resembling that of Catocala crataegi.