2 7 



to the secreted part ; i mm. long ; yellowish-brown. The first 

 exuvia is often brushed off leaving only the second which is .7 mm. 

 long. 



FEMALE. Plate 5, Fig. 3 and Plate 8, Fig. 6. Median and sec- 

 ond pairs of lobes well developed ; third pair rudimentary. Median 

 lobes broad and short, entire, plainly striate ; with oblique thickened 

 bars at their bases. Second pair usually entire, striate ; inner lobule 

 larger than the outer, oblique and with the inner edge thickened. 

 Third pair serrate, striate, usually very short but sometimes fairly well 

 developed. The gland-spines are arranged as follows: i, i, i, i, 

 4-9. The one nearest the median lobe on each side is very small 

 and blunt, sometimes wanting. Second row of dorsal gland-orifices 

 absent. Third row with 2 3 orifices in the anterior and 3 5 in 

 the posterior group. Fourth row with 2 3 orifices in the anterior 

 and 2 4 in the posterior group. Median group of circumgenital 

 gland-orifices, 7 16 ; anterior laterals, 22 32; posterior laterals, 

 16 22. 



SCALE OF MALE. Plate 2, Fig. 7 A. Length, .7 .9 mm. Sur- 

 face above rather rough in texture ; distinctly tri-carinate. Exuvia 

 pale yellow, occupying about one-third the length of the scale. 



MALE. Professor Comstock has described the male as follows : 

 " Yellow, marked with irregular reddish-brown spots ; thoracic band 

 reddish-brown, sometimes darker than the other markings. Length 

 of body including style, .62 mm. (.02 inch) ; length of style, .18 mm. 

 (.0006 inch). On each side of the anterior part of the thorax there 

 is a black spot which resembles an eye." 



I have never seen the male insect. 



REMARKS. 



Chionaspis furfura is a native of this country but Morgan discov- 

 ered it in England on Ribes sanguincum which had been carried there 

 from America. This is without doubt the best known species of the 

 genus in the United States, occupying the same position in this 

 respect that salicis does in Europe. A detailed account of its dis- 

 tribution in this country would be of little use since the fact that the 

 species is not recorded from any particular locality in any infested 

 state is no indication that it does not occur there. A list of the 

 states only is therefore given. It has been recorded by various 



