THE CANADIAN ENTOMOLOGIST. 129 



Solanaceae (Tobacco, Tomato, Potato, Deadly Nightshade, etc.) A few 

 species, such as Paonias Exccecatus, may be almost considered polypha- 

 gic ; but, generally, the species are pronounced in their preference for 

 special genera or families of plants. , At last the gaudy colors yield to 

 gray, in the Smerinthinae, suffused with rich brown and with pink shaded 

 secondaries ; the dull gray and blackish species at the most only relieved 

 by yellow spots on the body in the Sphinginae. A few species have 

 warmer tints, but the resemblance to the gray Noctuidae becomes now 

 apparent and the gay colors of the Choerocampinae do not again appear. 

 The pupation is subterranean, the cocoon wanting, the flight crepuscular 

 and even nocturnal. After a very diligent study of foreign genera, which 

 we must always consider, I think the naturalness of the sequence as pro- 

 posed by me cannot be gainsayed. There may be a better sequence for 

 the genera here and there, within the groups, to be attained, but that the 

 groups do thus better arrange themselves in a linear series, I am con- 

 vinced, not leaving out of sight the fact that the relationship is net-like 

 and not to be truly expressed by a straight line. As to particular points, 

 I believe Ampelophaga is older than Everyx, which latter I retain for 

 Choerilus with its spined tibiae. I believe Deidamia to be allied to 

 Thyreus by the shape of the wings. I follow Butler's extension of. 

 Calasymbolus, leaving Eusmerinthus as a subgeneric title for Geminatus 

 with its bi-pectinate male antennae. Our only true Smerinthus, as origin- 

 ally pointed out by me, is from the West Coast, but I believe the Califor- 

 nian species has also occurred in Upper Canada. We ha^e in South 

 Florida a West Indian colony, the extent of which is not yet known. 

 Stragglers from the south, as Ello, Titan, Labruscce, invade even New 

 England. How far north these breed with us, is not known. They seem 

 hardly to belong to the North American Fauna, but are all included here 

 so far as they have been reported to me as being taken within the political 

 limits of the United States. 



In this list I have followed with a dash ( — ) all species not known to 

 me in nature. (I trust my critics will observe these signs.) I have also 

 used the sign J to denote erroneous identifications. In the localities of 

 the species known to me I have tried to express my idea as to their dis- 

 tribution. 



Family SPHINGID^. 



Sub-family Macroglossin^. 



