234 THE CANADIAN ENTOMOLOGIST. 



SECOND CATEGORY OF ORIGIN OF THE NORTH AMERICAN FAUNA. 



/. Species tvhich are probably Desceiided from North American Ter- 

 tiary Ancestors, Occupying Comparatively the Same Territory.'^ 



Thyreus Abbotii Swainson. 

 Deidamia inscripta Harris. 

 Cressonia juglandis Abbot &= Smith. 

 Dolba Hylaeus Driiry. 

 Phemonoe quinquecaudata Ridings. 

 Alypia octomaculata Fabr., etc. 

 Hypoprepia fucosa Hiibfier. 

 Leucarctia acraea Drury. 

 Packardia fusca Packard, etc. 

 Lacosoma chiridota Grote. 

 Hyparpax aurora Abbot 6^ Smith. 

 Heterocampa Astarte Doubleday, etc. 

 Platysamia cecropia {Linn.), etc. 

 Prionoxystus Robinias Feck. ' 

 Leptina dormitans Guen., etc. 

 Eutolype Rolandi Grote. 

 Copipanolis cubilis Grote. 

 Harrisimemna trisignata Walk. 

 Arzama obliquata G. &= JR., etc. 

 Ufeus satyricus Grote, etc. 

 Marasmalus ventilator Grote, etc. 



THIRD CATEGORY OF ORIGIN OF THE NORTH AMERICAN FAUNA. 



/. Species which have beefi long Domiciled and probably Originally of 

 South Americaji Origin.'f 



Philampelus Pandorus Hiibner. 

 Citheronia regalis Fabr. 

 Eacles imperialis Drury. 

 Cosmosoma omphale Hiibner. 



* These are mere selections from a host of species which belong by descent to the 

 North American fauna per se. 



t This list is also extremely partial ; at some time in the past there has probably 

 commenced a movement from South to North which resulted in the settlement of the 

 ancestors of these forms within the territory of North America. 



