48 OHIO STATE ACADEMY OF SCIENCE. 
group. Median group of circumgenital gland-orifices, 10-21; anterior 
lateral, 20-35; posterior lateral, 10-24. 
Remarks: Found on Cottonwood at Painesville, Lake Co., 
O., by Mar. G. A. Runner, one of the State Nursery and Orchard 
Inspectors. the lobes of Ch. longiloba are longer than in any 
other species except gleditsiae, but the latter can easily be distin- 
guished by the fused median lobes and th wide separation from 
them of the second lobes. In the Ohio specimens the cireumgeni- 
tal giand-orifices are more numerous than in those originally 
deseribed; inedian group, 14-21; anterior laterial, 24-35; poster- 
ior lateral, 14-24. In most cases the dorsal pores were more 
numerous than in the original. 
CHIONASPIS ORTHOLOBIS Comst. 
Ch. ortholobis Comst., Rep. U. S. Dep. Ag., 1880, p. 317 (1881). 
Ch. ortholobis Cooley, Spec. Bull. Mass. Exp. Sta., p. 17 (1899). 
Ch. ortholobis Newell, Bull. 43, Ia. Exp. Sta., p. 154 (1899). 
Ch. ortholob/sHunter, Kan. Univ. Quar., ix, p. 101 (1900). 
Scale of female: Longer than Ch. longiloba, 2—2.5mm.; broadly 
oval, slightly elongated, usually regular; white to dirty-white. Exuviae, 
8 mm. long, brown and more noticeable than that of longiloba. 
Scale of male: Similar to that of Ch. longiloba. 
Female: Median lobes close, parallel half-way on inner margins, 
then each lobe narrows similarly from each side to an obtuse point, 
or rounded. Inner lobules of second and third Jobes rounded, larger 
than outer lobules and oblique. The gland-spines are arranged as 
follows: 1, 1-2, 1-2, 2, 4-5, shorter than in longiloba. The spines are 
arranged as in the latter. Second row of dorsal pores represented by 
the anterior group of 4-7; third row with 7-9 in anterior and 5-8 in 
posterior group; fourth row with 9-11 in anterior and 5-9 in posterior 
group. Median group of circumgenital gland-orifices, 10-25; anterior 
lateral, 18-35; posterior lateral, 16-24. They are quite variable in the 
same specimen. 
Remarks: Found by the author on Cottonwood at Newark, 
O. This species also occurs on willow, poplar and butternut. 
The median lobes are parallel in general direction and so close 
along the basal half, as to appear fused. There is a relationship 
indicated between Ch. longiloba and Ch. ortholobis in the absence 
of carinae on the male scale. This feature distinguishes these 
two species from all other known species, except that Ch. platani 
is very feebly unicarinate or the carinae are sometimes wanting. 
