192 , ENTOMOLOGICAL NEWS. [December, 



20. Sphinx lugens Wlk. — At light and over flowers at dusk; 

 not uncommon round Denver. 



21. Triptogon occidentalis H. Edw. — Common throughout the 

 State; larvse frequent on Poplars of any species. I have bred a 

 great number; they are easily reared from the ^'g'g; have fed them 

 on Cottonwood, in Denver, until half grown and then brought 

 them home to New York State and gave them Willow until full- 

 grown, with no evil result. Smerinthus imperator Strecker, if 

 not a true species, deserves its name. This form is very robust, 

 and the markings very distinct and high colored. I found a full 

 grown larva on Cottonwood in August; it was very dark green 

 compared with the larva of occidenialis (of which I had at the 

 time many feeding) and larger than any I had before met with; 

 this larva pupated, and, to my surprise, produced an imago, in 

 September the same 5'ear, of the imperator form; it was a 9 

 5^ inches in extent of wings. I have a d precisely of the same 

 stamp taken in west Colorado measuring 5)^ inches in expanse. 

 I have a series of the ordinary occidentalis form, all selected for 

 their good size and color, and the difference between these and 

 the imperator form is obvions enough. 



22. Smerinthus geminatus Say. — Rather common throughout 

 the State; the late brood has pale upper wings and the rose color 

 on under wings is very bright. 



23. Smerinthus astarte Strecker. — This insect is rather common 

 on trunks of Cottonwoods and comes freely to light; it varies 

 interminably in size, coloration and outline of upper wings. I 

 have bred quite a number from the eggs, and occasionally found 

 the full grown larva on Popubis angustifolia, and in confinement 

 it thrives best on that tree. 



24. Paonias exccecatus, — Occasionally comes to light, but is 

 not common; all I have seen are high colored. 



25. Paonias myops. — Common throughout the State, comes 

 freely to light and the larvae frequent on Choke Cherry. I have 

 not seen eastern examples so brightly colored as some I found in 

 western Colorado. 



There are decidedly two generations of the last four species 

 every year. 



The damage to the cereal crops in Canada by insects has been estimated 

 at |38,ocx3,ooo. — {Newspaper Entomology.) 



