52 
to be obscurely trilobed. Two very small projections immediately 
following second lobe. Third lobe a great distauce from the second, 
small and tooth-like. 
Habitat. — Tokio, Japan, on bamboo. (Takahashi; Div. But. Dept. 
A or. No. 5944.) 
Living crowded under the epidermis. The concealed habitat of this 
species is peculiar; the scales are so closely packed as to be with diffi- 
culty separated. In the scale, the insect 
< somewhat resembles such species as A. nerii, 
1 //\f\ but the characters of the female are quite 
different. It is possible that there are deli- 
cate and easily deciduous plates, but I found 
none in the specimens examined by me. The 
lobes also are peculiar. When I saw the in- 
Fig. 4.— Aspidiotus secreUu (from . , ,, T , 
drawSTbyOoctoreU). M ' rI ,m,,< ' r fche microscope, I was at once 
reminded of A. bossiece .Mask., but our insect is 
certainly quite distinct from that, and may not be even closely related. 
Aspidiotus duplex n. sp. 
Female scale. — About 2§ mm. diameter, subcircular, moderately con- 
vex, dark blackish brown with the Large round exuviae nearly to one 
side and orange in color. Removed from the bark, a white patch is left, 
representing the so-called ventral scale. Female (boiled in potash) 
pale orange, broadly oval or subcircular, with the large cephalic por- 
tion separated from the rest by a deep suture. Mouth-parts large. 
Skin on dorsum very strongly, transversely grooved, the grooves linear, 
often anastomosing. Four groups of ventral glands in the usual situa- 
tion, caudolaterals of US to 30, cephalolaterals of 42; median group 
represented by two orifices, not very close to one another. Besides 
these groups, there is a group of 17 to 22 orifices, quite similar in char- 
acter, on each side of the mouth-parts; these groups are oval in outline. 
The anus is about on a level with the anterior ends of the caudolat* ral 
groups. There are four (two on each side) long tubes or ducts origi- 
nating about the region between the caudolateral groups and the anus, 
and passing hindward, practically parallel, to the end of the body. On 
the dorsal surface the segments are marked by rows of oval pores. 
The "pygidium" shows on the dorsal surface a very distinct lattice- 
work, as in A. them and Ischnaspis filiformis. Median lobes very large, 
brown, rounded at ends, but notched on each side so as to be trilobed; 
the lateral lobes very small and passing into the straight parallel sides. 
The median lobes are very close together, but distinctly separated, not 
touching, not diverging. There are three other pairs of lobes, small, 
narrow, rounded at ends, very inconspicuous and easily overlooked 
among the scale-like plat s. Plates not extending beyond lobes, scale- 
like, not separately distinguishable, but forming a continuous fringe 
