82 FOSSIL BUTTERFLIES. 



a material exceedingly meagre, in comparison with the present vast accumulations 

 of the museums of Marseilles, Paris and Aix; we may hope soon to become familiar 

 with them through the careful researches of M. Oustalet; and these will show that 

 the beds of Aix are, perhaps, even richer in fossil insects than those of CEningen. 



The American affinities of the Rott butterfly are in entire harmony with what 

 is known of the other insects of the lignites of the Rhine, where, says Professor 

 Heer: 1 --"On retrouve egalement des types americains, qui appertiennent a 1'Ame- 

 rique tropicale et sous-tropicale." 



As to the flora of Radoboj, Professor Heer writes in the work just quoted (p. 

 96) : "Lcs plantes de la zone tempcree sont represcntees plus fortement qiui 

 Sotzka," and of the latter place he says (p. 95), after speaking of types of the 

 temperate zone: "Cependant ces especes se trouvent fort a 1'arriere-plan en com- 

 parison des formes tropicales et subtropicales, parmi lesquclles predominent . . 

 Ics formes indo-australiens; neanmoins les formes americains, loin d'y faire defaut, 

 sont representees par des types assez nombrcux et nettement accuses." As a 

 whole, therefore, the affinities of the tertiary butterflies seem to be precisely what 

 we should have anticipated from a study of the vegetation of the period. 



"We close this portion of our subject with a tabular view of the results we 

 have reached in considering the affinities of the tertiary butterflies with living 

 types, in which the countries, where the living allies of the fossil forms arc' now 

 found, are placed in the right-hand columns according to the degree of affinity of 

 their inhabitants to the tertiary species against which they are placed. 



"Loc. cit , p. 205. 



