270 Mr. R. 8. Bagnall on Thysanoptera 
and not quite twice as broad as long. Setz present, those 
at posterior angles distinctly the longest, more than 0°5 the 
length of the prothorax. Legs rather long and stout. 
Pterothorax slightly broader than prothorax. Wings 
reaching to abdominal segment 9, linear, fore-wing fourteen 
to fifteen times as long as broad, with cilia somewhat sparse, 
but long ; no duplicated cilia. 
Abdomen rather elongate, broader than pterothorax ; tube 
widest beyond apical half, about 1°4 times as long as the 
head and about 0°35 as broad as long, roundly and sharply 
narrowed at tip. Surface roughly carinate to beyond apical 
third with the interstices roughly sculptured or punctured. 
Apical hairs short and weak. Abdominal bristles strong, 
yellowish or colourless, those at hind angles of segment 9 
as long as the tube and those on 7 longer than those on 8 ; 
wing-retaining sete apparently in single pairs. 
Loc. Srycuuiirs. Silhouette: 1 example (? ?), Mare 
aux Cochons plateau, about 1000 feet, ix. 1908. 
8. Acallurothrips macrurus, sp. 0. 
(PE Vifige: 1,2) 
Length 1°6 mm.; breadth of pterothorax 0°4 mm. 
Brownish-black, shining, fore-tibiz (and knees) lighter 
brown. Antenne with two basal joints yellowish-brown, 
three yellowish, rest dark brown. Wings brown, cilia 
smoky-brown. 
Head transverse, about 0°85 as long as broad, and a little 
longer than the prothorax ; cheeks subparallel, with a minute 
seta behind the eye and another near base. Eyes moderately 
finely facetted ; posterior ocelli on a line across middle and 
touching their inner margins ; postocular bristles present, 
as long as the eye. Antenne about twice as long as the 
head, intermediate joints broadly clavate, relative lengths 
of segments 8-8 :—22:19:18:16:14:12. Mouth-cone 
large. 
Prothorax large, about 1:8 times as broad as long; sete 
present, short ; those at posterior angles the longest and not 
0°35 as long as the prothorax. Pterothorax broader than 
the width across fore-coxe. Wings reaching to abdominal 
segment 8; fore-wings rather broad, little more than ten 
times as long as broad. 
Abdomen ovate, broadest at segment 6, thence rounding 
to 9; segment 9 strongly transverse. Tube broadest at 
base, narrowed distally (evenly with straight sides in micro- 
scopical preparation, roundly in the same specimen on card 
