86 THE CANADIAN ENTOMOLOGIST. 



Pygidium with three pairs of lobes visible ; median pair large and well 

 developed, second pair smaller, third pair rudimentary. Median pair 

 contigtious at the base, their inner edges diverging at about a right angle, 

 each lobe being bluntly pointed. Lobes of the second pair each 

 composed of two rounded lobules, of which the inner is the larger. Third 

 pair only slightly produced. A distinct spine at the base of each median 

 lobe, and a small plate and obscure marginal gland opening between the 

 median and second lobes. A large spine above and a small one below 

 the outer lobule of the second lobe. A plate and marginal gland open- 

 ing between the second and third lobes. Following the third lobe, two 

 spines, two plates, a marginal gland opening, and, after a space, a group 

 of one to three plates, followed first by a marginal gland opening and 

 then by a terminal group of five to nine plates. Dorsal rows of oval 

 gland openings present. 



Groups of circumgenital glands compact. Median, 13 to 18 ; 

 anterior laterals, 25 to 42 ; posterior laterals, 19 to 28. 



Male. — Unknown. 



It is impossible to separate the two insects by their pygidia. 



Chiojiaspis Lintjieri, Comst., and this variety both belong to the 

 group of salicis L., ortholobis, Comst. 



Chionaspis cary^j n. sp. 



Scale of Female. — Inconspicuous on the bark of the host plant ; 

 elongated, rather irregular in form, of a dirty white colour with brown 

 exuvise. Anterior and smaller exuvia easily distinguished, the posterior 

 and larger one completely hidden from view by the copious secretion that 

 covers it. Length, 1.7 to 2. mm. Breadth, about .8 mm. 



Scale of Male. — Very small and white, with a very indistinct median 

 keel. The pale brown exuvia extending about one-third the total length. 

 Length, .5 to .7 mm. 



Female. — Elongated, narrowed toward the anterior end, being 

 broadest toward the posterior end. Segmentation distinct, the posterior 

 segments being produced laterally and bearing numerous gland openings. 

 Rudimentary antennce distinct, the distance between them about equal to 

 the width of the mouth-parts. , Pygidium brown, somewhat triangular, 

 with the first and second pairs of lobes well developed, the third pair 

 being more or less rudimentary. Median pair large, conspicuous, with 

 their inner edges fused together for about half their length, forming one 

 solid piece. Lobes of the second pair each divided into an inner, 



