rUE CANADIAN ENTOMOLOGIST. 85 



(4.) Long. 6-6)2 nun. 



(a) Convex, alt. 4 to 6 mm. 

 (i) Antennae 6-joiiited. 



(b) Legs slender ; ^ abdomen as wide as 



thorax tilice. 



(bb) Legs robust ; tibia longer than tarsus. 



(c) Scale finely punctured ; alt. 6 mm., the 

 highest of this group caprece. 



(cc) Scale strongly punctured on the sides ; 

 alt. 4 mm.j r^ abdomen hardly half as 

 wide as thorax cesaili. 



(ii) Antennjie 7 jointed ; scale not pruinose ; legs ordinary. 



(b) Scale hemispherical ; legs rather slender, .robinice. 



(bb) Scale with the anterior part very convex, the 



posterior depressed takachiJioi. 



(aa) Less convex, alt. 3 mm. or less. 



(i) Antenn?e 8-jointed; European. 



(b) Anterior legs with very broad tarsi . . . .btrberidis. 



(bb) Legs ordinary rosai-uni. 



(ii) Antennae 7-jointed ; Canadian. 



(b) Third joint very long ; scale alt. 



2^3 mm \ . . . car y arum. 



(bb) Third joint not especially long ; scale 



alt. 2 mm fraxini. 



(iii) Antennae 6-jointed ; France ciliaitim, var, 



(5.) Long. 5-51^ mm. 



(a) Flattened form. 



(i) Antennae 6-jointed Kansasense (alt. 2 mm.) and 



{^Folsomi (alt. i^ mm.), 

 (ii) Antennae 7-jointed . , . Lint?ieri, assimile and aurantiaciim. 



(iii) Antennae 8-jointed hortefisice, berberidis and persicce. 



(aa) Less flat, alt. 2 to 3 mm GuigJiardi, ciliatutn and 



\disihigue7idu7n. 



(aaa) Convex to subglobular Hoferi., aniennatufn, quercitro?iis, 



\l)itiiberculatu7n, caryariim, cor7ii, cyfiosbati, pyri, 

 \_robi?itce, robiniarum^ rubi, rugosum, Canadense. 



