No. 34.] HEMIPTERA OF CONNECTICUT: COCCIDAE. 363 



gland-orifices, 20-30; anterior lateral, 18-42; posterior lateral, 

 20-30. 



Scale of male : Length 1 mm. or less ; lateral margins parallel 

 tricarinate, white, exuviae pale yellow. Eggs purplish. There are 

 two generations each year in Ohio. 



Common on elm, Ulmus americana, often injuring young trees. 



Hartford, 5 Sept., 1903; New Haven, 9 Dec., 1903; 22 Sept., 1917, 3 

 Oct., 1918; Norwich, 24 Nov., 1914; Simsbury, 29 Nov., 1907; Torrington, 

 16 June, 1910. 



C. caryae Cooley. 



Can. Ent, xxx, 86, 1898. 



Scale of female: Length 1.7-2 mm., dirty white, exuviae dark 

 brown, inconspicuous on bark of host plant, irregular in shape. 



Female : Median lobes large and prominent, entire inner margins 

 fused nearly to tips. Median groups of circumgenital gland- 

 orifices, 12-19; anterior lateral, 21-29; posterior lateral, 15-22. 



Scale of male: Length .5-. 7 mm., white, exuviae pale brown, 

 one- third the length of the scale ; scale elliptical with a distinct 

 median carina. 



On bark of hickory, especially in the crevices and under the 

 edges of the loose bark. 



New Haven, 27 Aug., 1906 (W. E. B.). 

 C. corni Cooley. (PL xiv, 7.) 



Mass. Agr. Expt. Sta., Spec. Bull., 15, 1899. 



Scale of female: Length 1.5-2 mm., white, with exuviae orange- 

 yellow or brown. 



Female: Median lobes fused for half their length, then sepa- 

 rating by nearly straight lines toward their diverging tips, which 

 are almost pointed. Median group of circumgenital gland-orifices, 

 10-16; anterior laterals, 20-24; posterior laterals, 10-17. 



Scale of male : Length .6-.8 mm., white, narrow, tricarinate, 

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



Occasionally very abundant on pigeon bush, Cornus candidis- 

 sima (paniculata) and other species of Cornus. 



Hamden, 14 March, 1910; Southington, 26 Nov., 1914; Bantam, 2 Nov., 

 1916. 

 C. euonymi Comstock. Euonymus scale. (PL xiv, 6.) 



Rept. U. S. Dept. Agr., 313, 1881. 



Scale of female: Length about 2mm.; dark grayish brown; 

 broadly pyriform, convex, thick and firm in texture. 



Female : Median, second and third lobes pointed and serrulate. 

 Median group of circumgenital gland-orifices, 4-6 ; anterior lateral, 

 5-9 ; posterior lateral, about 4. 



Scale of male: Length 1.5mm. White, with yellow exuviae, 

 tricarinated. 



A serious pest of Euonymus, especially radicans. 



