123 
found attacking greenhouse plants, and of these brief mention 
follows, together with lists of the more important or susceptible 
plants which they infest. These lists are by no means exhaustive. 
Only the female scales are characterized unless otherwise stated. 
The Tessellated Palm Scale ( Bucalymnatus tessellatus Sign.= 
Lecanium tessellation)* was found common in one Chicago green¬ 
house, where it infested Areca and other palms. It has been found 
in widely separated parts of the United States, and is recorded 
from Europe, Australia, Hawaii, Ceylon, Jamaica, and Mauritius. 
The scale is about .15 of an inch in length, more or less oval, quite 
flat, and closely attached either to the upper or lower surface of 
the leaf. It is dark brown and has a tessellated surface some¬ 
what resembling the plates of a tortoise shell, this character be¬ 
ing, however, indistinct unless a magnifier is used. As stated by 
Mr. G. C. Davis, “at first glance one might easily mistake the 
scale for a drop of tar or grease on a palm leaf, to which there 
is a close imitation.”f This species is viviparous; that is, the 
adult female bears living young. 
The Soft Scale ( Coccus hesperidmn Linn.) is a cosmopolitan 
species, and commonly attacks various species of oleander, Phoe¬ 
nix sp., Reineckia carnea, Chamcedorea, ivy, Hibiscus, lemon, or¬ 
ange, Kentia sp., Ficus sp.t, and Camellia .1 It is one of the larger 
scales, being about .2 inch in length. It is oval, more or less con- 
Fig. 35. Hemispherical Scale, Saissetia he mi- Fig 36. Hemispherical Scale, Saissetia 
sphcenca, on fern. Natural size. hemisphcerica. Enlarged. 
*Kindly determined by Mr. J. G. Sanders, of the U. S. Bureau of Ento¬ 
mology, who also informed us that Eucalymnatus perforatus Newst., E. sub- 
tessellatus Green, and E. tessellatus var. swainsonce Ckll. are synonyms of 
E. tessellatus Sign. 
tPests of House and Ornamental Plants. Special Bull. Mich. Agr. Ex- 
per. Station, No. 2, p. 33. Agricultural College, Mich. 
^Reported as a food plant, but not found infested in Illinois. 
