373 
REMEDIES. 
From our study of this insect, we may conclude that the damage done 
by it in 1892 in beet fields was very unusual and hardly likely to recur 
except under peculiar conditions. The insect is not likely to reproduce 
in numbers for two consecutive years upon a crop Avhich must be as 
thoroughly cultivated as the sugar-beet, and such an outbreak will sel- 
dom occur except where waste land, on which the normal food-plant of 
the species grows in quantity, is broken up and seeded to some culti- 
vated crop, like the beet, which is closely allied to the natural food- 
plant. The plain inference points to the avoidance of such a course. 
When the insect itself appears on a plantation of sugar-beets, the 
crop should at once be sprayed with an arsenical mixture. A few days' 
delay may work very considerable damage, as the larva feeds ravenously 
and develops with great rapidity. According to an interesting manu- 
script report by Mr. H. B. Bdson, small holes were observed in the 
leaves at first without the larv?e being discovered and in thirty-six hours 
from that time half of the foliage of a plat was destroyed. Paris green 
should be applied at the rate of one pound to 100 gallons of water. 
The hibernating larval cases are found near the surface of the soil and 
a thorough harrowing will bring the majority of them quite to the sur- 
face, where they will be exposed to frosts and to the attacks of insectivo- 
rous birds and animals. Mr. Maxwell found after an experiment of 
this kind that the following spring the exposed cocoons had been largely 
emptied by birds such as the Meadow Lark and Quail, while the great 
majority of the remainder were dead. 
NOTES FROM CORRESPONDENCE. 
Abundance of the Peach-twig Borer in Washington. — The well-known Peach- 
twig Borer of the East (Jnarsia lineatella) has been doing considerable damage in 
the State of Washington, as we learn from Mr. Chatfield Knight, member of the 
State Board of Horticulture, who lives at Vancouver. Mr. Knight has noticed as 
many as 100 of the larvse of this insect upon a single three-year-old prune tree. 
Potato-tuber Moth. — Mr. Max Albright reports the recurrence of the Potato-tuber 
Moth (Lita solandla) in California, in the country between Los Angeles and Santa 
Monica. 
Grasshopper Damage in Minnesota. — Mr. H. B. Ayres reports that Camnula atrox 
is very abundant at Carlton, Minn. He wrote, under date of July 7, that for two 
weeks they had been marching west and were then flying, rising like bees and mak- 
ing flights farther than one can see, but nearly always westward. 
A new Chrysomelid on Apple in California. — We have received, through Mr. 
Gustav Eisen, of San Francisco, Cal., specimens of a Chrysomelid beetle, Colaspidea 
smaragdula Lee, with the information that it appeared during May in apple 
orchards. Mr. Coquillett, of this office, states that he has observed this beetle feed- 
ing upon leaves of grape and other plants, including Artemisia californica. It is 
evidently a general feeder like the allied Typophorus canellus and Graphops nebulosus, 
the so-called strawberry root-borers, and feeds in the larval condition on the roots 
of one or more of these plants. 
