218 THE CANADIAN ENTOMOLOGIST, 



tuiforinis and Spuria, are found in Saint Domingo and Mexico respec- 

 tively Dr. Herrich-Schaeffer mistakenly identifies the Cuban species 

 Grotei of Mr. Edwards, with Walker's Noctuiformis^ and in my papers on 

 the Cuban Hawk Moths I followed him. In the second sub-family, the 

 Chcerocampijii, we have the genus Deilephila decidedly belonging to our 

 first category. Here the position of Hemat-is is reversed. We have but 

 two species of Deilephila in America, representing the Galii and Livor- 

 nica of Europe ; while, in Europe, a number of species have descended 

 from the common Tertiary progenitor of both the American and European 

 forms. The remaining genera, except Everyx, are decidedly South 

 American in character. Our two more Northern common forms of F/iil- 

 ainpeliis have long been settled in our territory. Pachylia and Argetis 

 are South American, even as to species, the latter being a summer bird of 

 passage. In the Smeritithini we have, as a whole, descendants from an 

 Arctic Tertiary fauna, but certain of the forms probably are strictly 

 belonging to our second category, such as Cressonia and Paonias. Smer- 

 inthus proper is only Californian, and Calasymbolus has probably an 

 Asiatic species, Ki?ider}na?iii, which I have never seen. Triptogon is 

 decidedly a descendant of an Arctic Tertiary genus, which in Asia is 

 represented by many species. The fourth group of the Sphingidce is not 

 represented in North America. Acherontia is probably descended from 

 Tertiary Old World ancestors which equally probably never occurred in 

 North America. The fifth group, the Sphingini, is interesting from the 

 mixture of genera of different origin. While the Smerinthini do not seem 

 to cross the Equator, in the New World at least, the Sphingince are widely 

 spread, so that their origin is an interesting study. The forms of purely 

 North American descent and belonging to our second category, are 

 Ceratomia, Dolba, Ellema and Exedrium, genera with single peculiar 

 species, if we except Ellema, which, with its unspotted abdomen, contains 

 three doubtfully distinct species and is not unlikely derived from Hyloicus. 

 I cannot believe we have to do with an aberrant Smerinthoid form, not- 

 withstanding what Prof Fernald seems to think about it. The genus 

 Sphi?ix deserves careful study. It seems to me that the European Sphinx 

 ligustri is a true Sphinx, and in this regard our species depart a little 

 from the type and are numerous, while in Europe there is only one, the 

 European Convolvuli being, in my opinion, referable to Phlegethontius. 

 But this latter genus is decidedly South American in its character, and to 



