1934 ] 
A New Eurythrips from Trinidad 
5 
brachypterous. One important difference, not correlated 
with wing development, is the peculiar structure of the 
pedicels of the last two antennal segments. In ampins 
these are very short, widened basally, and that of the pe- 
nultimate segment is nearly twice as wide as that of the 
sixth. Other differences lie in the much larger size of 
ampins, in the longer and proportionately slenderer anten- 
nal segments, and in the much stouter tube. In ampli- 
ventralis this last is about 143 microns long and 79 microns 
wide near base, and the proportion of length to breadth is 
thus 1.81, as against 1.57 in ampins. 
EXPLANATION OF PLATE 1. 
(Drawn by Miss Helen E. Rearwin; camera lucida.) 
Enrythrips ampins sp. nov. 
Fig. 1. — Abdominal segments VIII-X, 9 , holotype. 
Fig. 2. — Right fore wing, 9 , holotype. 
Fig. 3. — Head and prothorax, 9 , holotype; all setae omitted 
from appendages. 
Fig. 4. — Right antenna, 9 , holotype. 
