Abstract
Geographical variations of Anthocaris cardamines LINNAEUS and Carterocephalus palaemon PALLAS in Japan were studied on the basis of many specimens from almost all of their known localities. A. cardamines distributed in the Akaishi mountain range and Mt. Yatsugatake is clearly distinguishable from A. c. isshikii, which is distributed in the Hida mountain range and Mt. Togakushi-yama. The author named ssp. hayashii to the butterflies distributed in the Akaishi mountain range and Mt. Yatsugatake. C. palaemon distributed in the Akaishi mountain range is also distinguishable from C. p. satakei distributed in the Hida mountain range. The author named the former ssp. akaishianus. In addition to these two species, some other butterflies have the geographical races in Central Japan which are similarly distributed as in the above mentioned two species. The author discussed the similality of their distribution and tried to interpret its origin.
