COCCIDAB OF OHIO. 45 



rather badly infested, causing malformation of the smaller 

 branches and twigs. 



CHIONASPIS CORNI Cooley. 

 Figs. 2G, 27. 



Chionaspis corni Cooley, Special Bull. Hatch Exp. Sta., p. 15 (1899). 



Chionaspis corni King, Can. Ent., xxxiv, p. CI (1902). 



Scale of female: Length, l.G — 2 mm. Somewhat irregular in 

 shape, gradually broadened posteriorily, of rather delicate texture, 

 white. The orange-yellow or brown exuviae are about .7 mm. long. 



Scale of male: Length, .6 — .8 mm.; the pals-yellow exuvia occu- 

 pies about one-third of the moderately tri-carinate scale. 



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

 they diverge in an almost straight edge to the somewhat pointed apex; 

 usually entire, short and broad. Inner lobule of second and third 

 lobes roimded, entire and much larger than outer lobule. Gland-spines, 

 excepting first, rather long and slender, arranged as follows: 1, 1, 1-2, 

 1-2, 4-6. Second row of dorsal pores represented by anterior group of 

 2-5; third row with 4-5 in anterior and 5-7 in posterior group; fourth 

 row with 4-7 in anterior and G-9 in posterior group. Median group of 

 circumgenital gland-oriflces, 9-lG; anterior lateral, 17-28; posterior 

 lateral, 10-20. 



Remarks : This species was first collected in Ohio, at San- 

 dusky on Cornus amomum, by Prof. Herbert Osborn and later 

 by the author. The smaller branches were encrusted with the 

 scales. 



CHIONASPIS BUONYMI Comst. 

 Fig. 28. 



Ch. euonymi Comst., Rep. U. S. Dep. Ag., 1880, p. 313 (1881) in part. 



Ch. ewomy??? / Kuwana, Pr. Cal. Ac. Sci., (3) iii, p. 75 (1902). 



Scale of female: Length about 2 mm., decidedly broadened pos- 

 teriorly, convex, rather thick and firm in texture, dark grayish-brown. 

 Ventral scale entirely developed, attached along the sides but free 

 at the posterior extremity. 



Scale of male: Length, 1.5 mm., white, tricarinated with a yellow 

 exuvia. 



Female: Median lobes, and lobules of second and third lobes, 

 serrulate and pointed. The lobes are far apart, and the lobules are 

 distinctly parted to the base, slightly chitinized on the margins, the 

 inner always the larger. Gland-spines rather short, and arranged as 

 follows: 1, 1-2, 1-2, 1-3. 1-4. On the ventral margin the spines are 

 short and inconspicuous, situated near each group of gland-spines 

 excepting the fifth. The dorsal spines are longer and situated mesad 

 of the corresponding ventral spine. Dorsal pores rather numerous and 



