5 
Larva (last stage) (b, e). — Head shining Inteo-eastaneons, the oeellar field, labrnni 
and clypeua black. Body pallid fuliginous, the harder parts glistening; dorsal 
shield of first thoracic segment luteous, inconspicuous; surface covered with 
longer or shorter erect bristles, which are very fine and taper to an exquisitely fine 
point; they arc l lackish at base, but beyond testaceous; the longer ones are nearly 
as long as the breadth of the body and are situated in lateral and infrastigmatal 
series: the shorter ones are hardly as long as the segments and are distributed on 
the sides of the body; there is also a series intermediate in length and laterodorsal 
in position, situated in the middle of the larger anterior division of the segments, 
while the lateral series lies on the smaller posterior section; under surface and pro- 
legs pallid; legs pallid, the claws luteous. Length, 15 mm . 
Chrysalis (d). — Nearly uniform, very pale honey yellow, more pallid beneath: the 
wings, excepting at base, with a very slight olivaceous tinge, all the thoracic 
and the first two abdominal segments, as well cs the wings and legs finely edged at 
the incisures with dark castaneous, darkest near the head; all the abdominal seg- 
ments are bordered posteriorly, at least on the dorsal surface, with pale testaceous; 
lips of spiracles fuscous; cremaster blackish or blackish fuscous. Length, 7.75' nm ; 
breadth, 2.25 mni . 
TWO PARASITES OF IMPORTANT SCALE-INSECTS. 
By L. O. Howard. 
There is a destructive scale-insect known as Aspidiotus uvw Comst. 
which infests the lower part of grape-vines, from the ground to the 
shoots of second year growth, and frequently clusters upon this 
portion of the vine under the rough outer bark in such numbers as to 
seriously affect its vitality. The species was originally described from 
Vevay, Ind., but has since been sent in to the Division on Entomology 
from Louisville, Ky., Kirkwood, Mo., and Lafayette, Ind., and has been 
found by Mr. Pergande and Mr. Lull, members of the office force, at 
Soldiers' Home, D. C, and near Beltsville, Md. A closely allied species 
occurs in Europe, but Prof. Comstock considers it distinct. Miss 
Murtfeldt, in studying this insect at Kirkwood, Mo., observed that it is 
preyed upon by mites of the genus Tyroglyphus and that it is also 
attacked by a true parasite. In November, 1888, and October, 1889, 
she sent in a few specimens of this parasite, which proves to belong to 
the chalcidid subfamily Aphelininoe, in which it forms a new genus. It 
is described below under the name Prospalta murtfeldt ii n. g. et n. sp. 
The well known and widespread scurfy bark-louse of the apple 
(Aspidiotus furfur us Pitch) is a common denizen of apple orchards 
throughout the eastern United States. It was first described by Dr. 
Pitch in the Report of the New York State Agricultural Society for 
1856 and was subsequently redescribed by Walsh as Coccus harrixii in 
volume it of the Practical Entomologist. The specie's affects apple, 
crab, cherry, pear, quince, currant, and the mountain ash. It occurs 
from Massachusetts to Kansas and seems to be especially abundant in 
the State of New York. No parasite of the species has hitherto been 
discovered. In July, however, of the present year, a number of speci- 
