SPHINX CHIONANTHI. 103 
came forth on the wing July 20th. It is not a 
common moth. 
" Of those insects which go into the earth, and 
breed twice in the year, it is best to procure the 
spring caterpillars, which are much more likely to 
survive, the autumnal ones commonly dying in chry- 
salis in the winter." 
On the same plate with the preceding caterpil- 
lars, we have figured a very beautifully marked 
larva (fig. 3) of an American species of Humming- 
bird Hawk-moth, described by Abbot and Smith 
under the name of Sphinx Gaurw. It is nearly re- 
lated to the S. Medea and S. (EnoihercB of Fabricius. 
The moth has the wings dentated ; the anterior pair 
olive-green, with two whitish transverse streaks, 
and a discoidal small rounded spot of the same 
colour ; the hinder pair ferruginous, with a pale 
streak exteriorly. The caterpillar feeds on the 
gaura {Gaura biennis) in the month of May. The 
moth is rare in Georgia and most other parts of 
America, and in its habits seems closely to resemble 
our own Humming-bird Hawk-moth. 
