When collecting small living animals, particularly insects or other small Arthropods, for dissection, or search for parasites, etc., one encounters difficulties in choosing a suitable and convenient arrangement in which the animals may be kept without injuries until they are brought home. The usual entomological corked glass tubes and wide-mouthed jars with a gauze cover are not practicable when a large number must be carried; their bulk hinders free movement, and their fragility renders it necessary to pack them carefully in a box or other suitable containers.