312 
stating that it points to Oriental origin. The species is treated 
by Ferris in an article on Mealy-Bugs in Jn. Econ. Ent., XII, 
p. 297, where the fact in regard to its aberrancy is plainly stated. 
Ferris describes the morphological characteristics and figures 
the important distinguishing characters. Morrison in his paper 
on the Philippine Non-diaspine Coccidae (Phil. Jn. Sci., 17, 2, 
1920) and Green in his Coccidae of Ceylon, Pt. V, also figure 
the essential characters of this species. The latter author gives 
a rather poor illustration of the insect as it appears in nature. 
GENUS TRIONYMUS BERG. 
Pseudococcine forms with circular wax pores numerous and 
closely crowded, particularly in the derm of caudal segments ; 
with numerous dorsal setae and few cerari. Tarsal claw with- 
out a denticle and antennae of adult female seven or eight- 
segmented. 
Type of the genus Trionymus perrisii (Sign.). 
Four species referable to this genus are commonly found in 
Hawaii, two on sugar-cane, the other two on lilies and Bermuda 
grass respectively. The species commonly known as the Pink 
Mealy-Bug, formerly referred to as Pseudococcus ‘calceolariae 
and now believed to be Cockerell’s P. sacchari, is always present 
behind the leaf-sheath on sugar-cane, and usually the infestation 
is extensive. It is a pest of considerable economic importance. 
The legs, antennae, and certain morphological characters have: 
beenyaieured by Morrison: (Phil, jn. Sas l7, 2.1920). ithe 
species, formerly misidentified as P. sacchari and P. saccharifolii 
but now believed to be Maskell’s calceolariae, has not heretofore 
been fully characterized or figured. A brief diagnosis follows, 
illustrated by drawings: 
Trionymus calceolariae (Maskell). 
In life—Concealed beneath the sheathing bases of the leaves of its host, 
surrounded by masses of wax. It appears slenderer and less rotund than 
either of the other two species of mealy-bugs occurring in the same situa- 
tion, and the body color is grayish rather than pinkish, as in those species. 
The filaments of wax from the penultimate and anal lobes are heavy; and 
there are also four or five finer filaments cephalad of these on either side. 
The dorsal covering is mealy and rather light. Oviparous, the ovisae loose 
and fluffy. Color when heated in KOH lilac, a rose tint being meanwhile 
