1925] 
New Neotropical Thysanoptera 
69 
hypodermal pigmentation in head, ptero thorax, and along sides 
of abdomen. 
British Guiana; C. B. Williams; at base of Imperata caudata. 
This and the following are the first species of their super- 
family to be recorded from the New World. 
Stephanothrips occidentalis Hood and Williams, sp. nov. 
Female (apterous) .—Length about 1.4 mm. Color straw 
yellow, with head, prothorax, and fore femora (except apex) dark 
brown; tube brightened with yellow, shading to dark brown at 
extreme apex. Vertex of head with three pairs of long bristles, 
which are slightly expanded at tip, the middle pair about three- 
fifths as long as third antennal segment, others shorter, outer 
pair set close to, but at a lower level than, the other. Ninth 
abdominal segment about 2.6 times as long as eighth. Tube 
nearly 1 . 5 times as long as head and about 1 . 8 times as long as 
ninth abdominal segment. 
St. Croix and Trinidad; C. B. Williams; from bushes. 
Readily known from its congener by the characters given 
above. 
