Helophorus arcticus Brown was described (1937, Can. Ent., LXIX, 109) from a single specimen taken by the describer in August, 1935, at Lake Harbour, Baffin Island, which is situated on the north shore of Hudson Strait at latitude 62° 50', longitude 69° 52'. The specimen was found beneath an old caribou horn resting on moss a few feet from the seashore.