124 
vex, smooth—there being no prominent ridges—and yellowish- 
brown, or darker, in color. The young are elliptical or oval, flat, 
and pale, those recently born being transparent, or nearly so, 
which makes them inconspicuous on the foliage. Like the tessel¬ 
lated palm scale, the adult female bears living young. 
The Hemispherical Scale (Saissetia hemisphccrica Targ.*, Fig. 
35, 36) is very similar in appearance to the soft scale, above 
mentioned, the two being indistinguishable by the casual observer. 
In addition to structural differences this scale differs from the 
soft scale in its life history, reproduction being by means of eggs 
deposited beneath the scale. It is common on the sago palm and 
on ferns, particularly the Boston fernf, and it has also been 
found on oleanderf, Camellia f, Croton, orangef, and orchidsf. 
This species is almost, if not quite, as wide-spread as the soft 
scale. 
The Pineapple Scale (Diaspis bromelice Kern., Fig. 37, 38, 
39) is occasionally found on sago palm and Latania borbonica, 
Fig. 37. Pineapple Scale, Diaspis bromelice. Less than natural size. 
but it seldom becomes numerous enough, according to our ob¬ 
servations in Illinois, to do any appreciable damage. It has been 
reported, however, as a serious pest to the pineapple (Ananassa 
*Determined by J. G. Sanders, thru the kindness of Dr. L. O. Howard. 
Mr. Sanders also reports S. filicum Bdv. as a synonym of S. hemisphcurica. 
fReported as a food plant, but not found infested in Illinois. 
