391 
In 1883 I discovered the same species in the conservatory of this 
Department to be extremely abundant, both on the upper and under 
sides of the leaves of a species of Amarillis. Some of the leaves were 
so badly infested that their entire surface became blistered and bright 
red, as if attacked by a peculiar fungus. 
I have observed it also on quite a number of different kinds oi hot- 
house plants, as Bichardia cethiopica, Ficus grandiflora and elastiea, 
Aralia, Gardenia, Phoenix, and different species of Dracama; also on 
Hydrangea, Chrysanthemum, foreign grape-vines, cotton, and a num- 
ber of weeds growing with some of the cultivated plants. 
It appears from these observations that this species may gradually 
become as troublesome in hothouses as the other two species. 
Heliothrips cestri sp. nov. 
Length, 1.2 mm . General color black or dark brown; the end of the body more or 
less distinctly reddish. Head reddish, marked with a rather broad, dusky, median 
stripe and a shorter one behind each eye. Eyes dark brown. Ocelli reddish. 
Antennae dark yellow, with apex of first, fourth and fifth and the remaining joints 
black. Prothorax generally a shade darker than the head, and marked with a still 
darker median and lateral stripe. Legs reddish-yellow ; median and posterior femora 
and tip of tarsi blackish. Wings dusky, marked with a pale band near base, a rather 
indistinct band beyond the middle and frequently a pale apex, while the surface is 
clothed with minute whitish hairs, and the veins with stiff spines. Fringes dusky. 
Surface of body reticulated, coarsest on the abdomen. Third antennal joint almost 
as long as the two following joints combined; the fourth and fifth subequal iu 
length, each of them scarcely longer than the second. 
The larvae are whitish, sometimes slightly greenish or yellowish, and 
the alimentary canal, when tilled, more or less distinctly brownish • they 
are very dirty looking on account of a clear or brownish fluid. Avhich 
they eject from the upturned anal segment. The eyes are small and 
brown. 
HELIOTHRIPS FASCIATA SP. NOV. 
A specimen of this handsome little species was sent to the Depart- 
ment of Agriculture by Air. G. W. Harney, of Yuba County, Cal.,with 
the statement that two of them were discovered by him in November, 
1894, on a leaf of orange infested with Aspidiotus aurantii. This acci- 
dental occurrence of these specimens on the infested leaf makes it 
appear as though they might be preying upon the scales, which, how- 
ever, I seriously doubt, since none of the other known species of this 
genus have shown carnivorous habits. 
Heliothrips fasciata sp. nov. 
Length, about l mm . General color, black. Head and thorax dark brown ; the ante- 
rior margin of the prothorax and more or less of the inesotliorax yellowish-brown. 
Eyes black. Ocelli clear, yellowish. Antenna' whitish; a broad band on joints 
3 and J, apex of the fifth and the remaining joints black. Legs black, with apex 
of femora, base and apex of tibia', and the tarsi, except the apex, yellow. Anterior 
wings blackish; their base and a broad band beyond the middle transparent white. 
Posterior wings faintly and uniformly yellowish. Fringes blackish. Head and 
thorax reticulated and furnished rather sparsely with short, slightly carved bairs, 
