484 . General Notes, [ May 
morning, especially of bright and hot days. Before changing to 
a pupa it usually crawls into the ground, getting down through 
some cracks or fissures in the floor of the house where it comes 
out. It descends to a depth of three or four inches before trans- 
forming. There is but a single generation in a year. 
Entomological News.—The vine-growers of Algeria are now 
seriously troubled by the destruction caused by a Chrysomelid 
beetle, Haltica ampelophaga. In some places more than a third 
part of the whole production is destroyed by it. It feeds on 
grape-vine leaves only, eating them as fast as they appear, and 
ultimately killing the vine. As it is a very prolific insect, pass- 
logica Americana, vol. ii. No. 12).——Miss O 
` Report of Observations of Injurious Insects” has just appeared. 
ZOOLOGY. 
Artificial Parthenogenesis.—Two cases of parthenogenesis 
induced by artificial stimuli are of interest. The first is that 
hibia. Dr. Dewitz, with another purpose in view, placed some 
unfertilized frogs’ eggs in a solution of corrosive sublimate, and, 
to his great astonishment, the next morning found them swollen 
and segmented. Some showed but one division, while others 
had divided several times. A few were irregular’ in their seg- 
ea er 
mersion in the sublimate solution was sufficient to induce the 
I€ atation. : : 
