232 
Psyche 
[December 
dad. All except one, which was found in a flower of Hydrangea , 
were taken by sweeping grass. 
The long, slender antennae and the coloration make this a 
very distinct species. 
Sericothrips inversus sp. nov. 
Female (macropterous ) . — Length about 1.1 mm. Color by 
transmitted light nearly uniform yellow, with a few brown spots 
on prothorax two on the metascutum, and one on each side of 
abdominal tergites 2-7, behind a narrow, transverse, subbasal 
brown line; antennae gray in segments 1-3, the first palest, 2 and 
3 lightly darkened at sides; 4-8 abruptly dark blackish brown, 
excepting distal constriction of 4, which is conspicously pale; 
legs pale grayish yellow, sometines lightly washed with brown; 
fore wings gray, darker in scale and shortly beyond it, paler at 
tip. By reflected light, the color is nearly white, with a large 
gray pronotal blotch (which has a concave anterior margin and 
is darkest at anterior angles), two gray spots on metascutum, 
and the bases of abdominal tergites each with a narrow trans- 
verse gray band. Mouth cone very long and acute, attaining 
base of prosternum. Antennse long and slender ; segment 3 about 
three times as long as wide, 4 decidedly narrowed in distal third, 
urn-shaped, 8 unusually slender, more than four times as long as 
wide. 
Antennal segments: 12345678 
Length ( M ) 24 42 62 52 48 54 14 19 
Width (ju) 27 26 19 19 16 16 6 4 
Total length of antenna 0.32 mm. 
Described from several females taken by Mr. C. B. Williams 
in Dominica and Trinidad, by sweeping grass. 
The coloration of the antennse — abruptly dark brown in 
segments 4-8, save for the pale gray apex of segment 4, which is 
decidedly narrowed — should serve for its recognition. The sec- 
ond segment of the antenna is longer than usual in this portion 
of the genus, and segment 8 is especially long and slender. 
