Mr. R. S. Bagnall on new Thysanoptera. 363 
Colour chestnut-brown, including tarsi ; fore-wings smoky 
yellow-brown, darkest basally and almost colourless near 
tip. Antennal joints 1, 7, and 8 wholly brown, 2 yellowish 
apically ; 3 yellowish, lightly shaded with grey-brown dis- 
tally ; 4 light brown, ill-defined yellow basally excepting 
stem; 5 and 6 brown, yellowish basally. 
Head short, about as broad as long. Vertex raised in 
form of a hump and dorsally covering the base of antenne ; 
eyes occupying about 0°35 the dorsal length of the head, 
ocelli somewhat large, placed well forward, the posterior 
ones situated close to the inner margins of the eyes and 
the anterior one forwardly directed. Mouth-cone reaching 
across prosternum. Postocular setz short and slender, only 
about 07 the length of the eye. Antenne nearly twice as 
long as the head, with the relative lengths of joints 3 to 8 
as follows :—28 : 25 : 24: 24: 23: 13. 
Pronotum very short and strongly transverse, 0°5 the 
length of the head and 2°8 times as broad as long. Sete 
complete, well-developed, the postero-marginal longest, the 
outer pair being nearly as long as the median length of the 
pronotum ; the inner postero-marginal pair and the mid- 
lateral pair slightly shorter; the outer of the antero- 
marginal sete about 0°5 the length and the inner pair 
shortest of all. 
Pterothorax broad and heavy. Wings short and broad, 
reaching to the sixth abdominal segment; no duplicated 
series of cilia, 
Abdomen heavy, broader than the pterothorax, gradually 
narrowing from segment 6 and more roundly from 8 to base 
of tube. Tube about 0:7 the length of the head, about 
twice as long as broad at base; sides tapering evenly to top, 
where it is about 0°5 as broad as at base. Terminal hairs 
colourless distally, about 0°7 as Jong as the tube ; abdominal 
bristles moderately long, dusky except those on 9, which are 
about 08 as long as the tube; those on 7 shorter and a 
little stouter. 
Distinctive on account of the “ black feet,” short head, 
and very short pronotum. 
Type. In Coll. Bagnall. 
Hab. Kieyrr, Ezbst el Nakhl, gall thrips on Sunt, or 
“Sant” (Acacia arabica), vi. 1909 (fF. C. Willcocks), Reg. 
no. 806. A variety has the antennal joints 3 and 4 yellow 
and only lightly tinged with grey-brown. Mr. Willcocks 
