48 NEW YORK STATE MUSEUM 
introduced form. ‘This leaf feeder was probably brought into the 
country on Japanese nursery stock and Dr. H. T. Fernald, writing 
on the same, states that it has an extended distribution in the 
Orient, occurring in Japan, on the Island of Yezo and southward 
at least as far as Yokohama. It also occurs in China near Pelcin, 
where it is very abundant, and it has been reported as far south 
as the Yiangtse-Kiang river, just north of the 30° of latitude. 
This distribution would indicate that the insect will probably be 
able to exist all over the United States except the peninsula of 
Florida, north of Mexico and in southern Canada. Its eastern 
food plants are Celtis, birch, elm and Japanese persimmon. It 
was found mostly in this country on Norway maples, pear, apple 
and cherry, though it also occurred on crab apple, willow, black 
“y birch, oak-leaved white birch, oak, — 
American elm, Wahoo elm, black- 
berry, beech, poplar, mountain ash 
and buckthorn. This data is culled 
from a recently issued bulletin by 
Dr Fernald.? 
The cocoon is an oval structure 
with peculiar broad white stripes 
[fig. 1]. One specimen was found 
on a recent importation of Japa- 
nese maples in a greenhouse at 
Albany, though there is no evi- 
dence to show that the insect has 
become established in the open in 

Ai : 6 HRD 
Fig. 1 Cocoons of oriental slug caterpillar; this vicinity. It appears to be a 
the larger probably female, on the twig; : 9 
the smaller, probably male, empty, both common species in Japan. We 
Da a a have been informed of earlier im- 
portations of Japanese maples bearing similar, possibly identical, 
cocoons, so it would not be surprising were subsequent investigation 
to show that this slug caterpillar was already established in several 
widely separated localities. 
scumy scale (Chionasipas (ial, ase itch) ee mens 
whitish, scurfy or chafflike scale continued abundant in the Hudson 
valley, being specially numerous in the vicinity of Annandale, where 
it caused considerable apprehension because many people mistook 
it for the San José scale. Aspidicetas pernicio sams 
Comst., a species which has become well established in Germantown 


“Hatch Exper. Sta. Mass. Agr. Col. Bul. 114. Jan. 1907. 
