66 OHIO STATE ACADEMY OF SCIENCE. 
vitality not too greatly impaired, there are several spraying mix- 
tures which ean be used to advantage, viz.. ‘‘ Lime, sulphur and 
salt wash,’’ ‘‘Oregon Wash,’’ *‘ Resin Wash,”’ ‘‘ Whale-oil soap 
wash,’’ ‘‘ Potash Wash,’’ Kerosene emulsion, Crude petroleum, ete. 
The U. S. Dept. of Agriculture and various State Experiment 
Stations have from time to time issued bulletins containing infor- 
mation concerning the San Jose Seale, and recipes for the 
preparation of the above washes. 
ASPIDIOTUS PICEUS Sanders. 
Fig. 66. 
A. piceus Sanders, Ohio Naturalist, iv, 4, p. 96 (1904). 
Scale of female: 1.8—2mm. in diameter, flat often subelliptical 
to oval, with sub-central exuviae; black shading to dark gray toward 
margin, having the appearance of pitch covered with dust. The raised 
shiny black, deciduous first exuvia is*~surrounded by an indistinct 
ring like depression. When rubbed the second orange exuvia appears. 
The young scales appear not unlike the young male scales of A. per- 
niciosus. When removed a white patch is left. 
Scale of male: Elliptical, 1mm. in length, black, with distinct 
ring-like depression surrounding the lustrous-black exuvia, the poster- 
ior flap shading to gray. 
Female: With one pair of lobes, well-developed, prominent, broad, 
noiched midway on lateral margin, with outer corners well rounded 
off toward inner angle. Inner margins parallel, not close, bounded by 
large chitinous processes, which extend, somewhat reduced in density, 
around the *outer margin to a denser process at outer base of lobe. 
Second and third lobes rudimentary, sometimes with inner angle of 
second lobe slightly developed. Interlobular incisions broad and deep, 
bounded by elongated chitinous processes, the inner usually the larger. 
There are two perforations anterior to median lobes on a level with 
the base of chitinous processes of first incision. Between the median 
and second and the second and third lobes are pairs of di-pointed 
spine-like plates, two thirds of length of median lobes. On the dorsal 
surface there is a spine on each of the second and third lobes, and on 
the ventral surface, each lobe bears a spine on the lateral margin, 
laterad of dorsal spine, also spines one-third and two-thirds of distance 
to penultimate segment. First row of dorsal-pores (between first and 
second lobes) of 2; 2nd row of about 6; 3rd row of 5—6; 4th row 
(near margin) of 3-—4 orifices. Four or five groups of circumgenital 
gland-orifices, median sometimes wanting. Median, 0—3; anterior 
lateral, 15—25, averaging 18; posterior lateral, 6—14, averaging 9. 
