Vol. xxiii] ENTOMOLOGICAL NEWS 9 
Description of the Larva and first bred specimens of 
Sphinx (Hyloicus) franckii Neum. (Lepid.). 
By Extison A. Smytu, Jr., Blacksburg, Virginia. 
(Plate II.) 
A half mile avenue of young ash trees on the Experiment 
farm lands of the Virginia Polytechnic Institute at Blacks- 
burg, Virginia, has for some years yielded me larvae of Cera- 
tenua undulosa and Sphinx (Hyloicus) chersis, whenever 
sought for in season; at times, Protoparce rustica in numbers, 
and at intervals Chlaenogramma jasminearum, with the larvae 
of these species I have been intimate for years, and know them 
apart in any instar. 
On the 25th of last August (1910), one of the boys, Mr. 
Barringer, hunting with me for Protoparce rustica in the ash 
avenue, brought me six full grown larve, of the general type 
of chersis, all from one ash tree, which larve were altogether 
new tome. By elimination, I concluded that they were either 
canadensis or francku, with the chances largely in favor of 
the latter. Although lacking the anterior fleshy protuberances 
of Ceratomia amyntor, a pair of dorsolateral, tuberculated 
lines, strongly suggested the dorsal serrated ridge of that spe- 
cies. I sent a specimen at once to Dr. Beutenmuller, which 
reached him ready to pupate, and unfortunately died before 
he could have it figured. He agreed with me that it could be 
only canadensis or franckii. Of my remaining five larve, two 
died, one pupated on the surface of the breeding cage, and two 
went under earth before I could photograph or make a colored 
sketch. Fortunately, as a preliminary step to a water-color 
sketch, I had taken a careful description the afternoon they 
were brought to me, intending to paint in the morning. 
The following is the description of these larvae, full grown, 
and at the end of their last instar: 
Full length, 3% inches; pea-green dorsally and dorso-laterally, 
darker green laterally and ventrally; two dorsal longitudinal lines 14 
inch apart, green dorsad, edged with yellowish white laterad, and armed, 
on first three segments, with rather prominent, yellowish, pointed tu- 
