1. Territory is defined as "any defended area" (Noble, 1939). When keeping the territories makes any regulating effect on the social life of animals, the author prefers to use a term "territoriality" or "territorialism" on that system (Ito, 1966). 2. Home range would be defined as "normal activity range of individuals or groups in one daily or houry period". 3. This paper shows the analytical methods of the activities in a home range below-described. 1) Observation-area curve (Odum & Kuenzler, 1955). 2) Activity radius (Dice & Clark, 1952). 3) Displacement range (This paper). 4. On April 8, 1973, the home range of Polygonia c-aureum called "S" (22. 2m^2) and that of Inachis io geisha called "T" (11.7m^2) were overlapped. This would be the case that the interspecific territory of "T" was established in the intraspecific territory of "S". Interspecific territory of Inachis io geisha called "U" (63. 7m^2) was established in the home range (130.4m^2) on April 9, 1973. 5. On August 31, 1973 the territory of Kaniska canace no-jaonicum called "L" was established arround the feeding site. The range of the territory was restricted within the radius about 30 cm while the size of home range was 31.9m^2. 6. Scott (1974a) stated that territory is absent in butterflies. But, in some species of butterflies, there exists an area, where other individuals can not intrude owing to the dominant's territorial behaviours. Accordingly, it should be called a"territory". 7. Dominant holds one or several resting points in the home range, and makes patrolling flights and chasing flights from these points. This would be a basic behaviour in a home range in butterflies. And the activities would be classified into two types : "type of resting" and "type of circular flight". 8. There would be two kinds of territories in butterflies, which are related to mating or feeding. These are the two of three main factors on animal's territories stated by Ito (1966).
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