|miocene.| | America. | Zone. | | | | | | | | | | +========+============+==============+============+==========+=========+ | | | Subtropical | North | | | | |Eugonia | temperate | temperate | | | | |atava. | America. | Zone. | | | | +------------+--------------+------------+----------+---------+ |Radoboj—| | Subtropical | North | | | | middle |Pontia | temperate | temperate | | | |miocene.|Freyeri. | America. | Zone. | | | | +------------+--------------+------------+----------+---------+ | | | | Indo- | | | | |Mylothrites | African. | Malayan. | | | | |Pluto. | | Austro- | | | | | | | Malayan. | | | +--------+------------+--------------+------------+----------+---------+ GENERAL RESUME, WITH NOTICES OF UNDETERMINED FORMS. Nine well authenticated fossil butterflies are now known, all from the European Tertiaries; five of these have been found in the gypsum beds of Aix in Provence, southern France, belonging to the Ligurian, a division of the upper eocene; one in the lignites of Rott in the Rhenish Provinces of Prussia, belonging to the Aquitanian, or lower miocene; and three in the marls of Radoboj in Croatia, Austria, appertaining to the Mayencian or middle miocene. Our present knowledge, then, places the apparition of butterflies towards the end of the lower tertiaries.