Larva (last ,siaf/e) (b, c). — Head shiuing luteoH'astaneous, the ocellar field, labrum 

 and clypeus black. Body pallid fuliginous, the harder parts glistening; dorsal 

 shield of first thoracic segment Inteous, inconspicuous; surface covered with 

 longer or shorter erect bristles, which are very fine and taper to an exqnisitely fine 

 point; they are Mackish at base, but beyond testaceous; the longer ones are nearly 

 as long as the breadth of the body and are situated in lateral and infrastiguiatal 

 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 anterioi' 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""". 



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 ;;s the wings and legs finely edged at 

 the incisures witli dark castaneous, darkest near the head; all the abdominal seg- 

 ments are l)ordered posteriorly, at least on the dorsal surface, with pale testaceous; 

 lips of spiracles fuscous; cremaster blackish or blackish fuscous. Length, 7.75"""; 

 breadth, 2.25"'"'. 



TWO PARASITES OF IMPORTANT SCALE-INSECTS. 

 By L. O. Howard. 



There is a destnu-tive scale-insect known as AsjMdiotus nvw Coinst. 

 which infests the h)wer 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 Lark in such numbers as to 

 seiiously affect its ^'itality. The species was originally described fioin 

 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, mend)ers of tlie office force, at 

 Soldiers' Home, 1). 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 Tyroglyi>hus 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 Aphelinimv, in which it forms a new genus. It 

 is described below under the name Proq)aUa murtfchUH n. g. et n. sp. 



The well known and widespread scurfy bark-louse of the apple 

 {A,spi(liotMfi fnyfurus Fitch) is a common denizen of apple orchards 

 throughout the esisteru United States. It was tirst described by Dr. 

 Fitch in the Report of the New York State Agricultural Society tor 

 18.>G aud was subsequently redescribed by Walsh as Coccus harrlsii in 

 volume II of the Practical Entomologist. The species affects apple, 

 crab, cherry, pear, quince, currant, and the mountain ash. It occurs 

 from Massachusetts to Kausas 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- 



