276 Mr. R. S. Bagnall on new Thysanoptera. 



apparently present, short, dark, slender but blunt at ends ; of 

 the two at each hind angle the outer is about 0*34 and the 

 inner 0*26 the length of the pronotum, whilst the seta at each 

 anterior angle is only about 0*2 the length. Wings slender, 

 sub-linear, slightly constricted medianly ; cilia comparatively 

 sparse and distant ; fore-wing with duplicated cilia. Legs 

 comparatively stout, fore-legs incrassate, fore-tibia; short, 

 only about 0*5 the length of the femur ; the end within pro- 

 duced into the form of a tooth ; tarsus armed with a strong 

 sharp tooth. 



Tube stout, about 0*8 the length of the head, about 0*7 as 

 broad at apex as at base and a little more than twice as long- 

 as broad at base. Terminal hairs weak, colourless terminally, 

 and longer than the tube. Abdominal bristles somewhat 

 long, slender ; those on segment 9 as long as or slightly 

 longer than the tube. 



Type. In Coll. Bagnall, University Museum, Oxford. 



Uab. South Africa, Cape Town, 1 £ in flower of Sugar 

 Bush (Protiacia), July 13th, 1914 (E. B. Poulton). 



Trichothrips melanurus, sp. n. 



$ . — Forma aptera. Length c. 1*4 mm. 

 This species comes into the section of the genus containing 

 yellowish to brown species, and having the tube shorter than 

 the head and the mouth-cone reaching across the prosternum. 

 It most closely approaches T. semicoecus, Uzel, from which it 

 differs in the shorter tube, coloration of the body, and 

 appendages. 



Head and prothorax brown, pterothorax and abdominal 

 segments 1 to 8 more or less irregularly brown. Abdominal 

 segment 9 yellow and tube deep black ; except for extreme 

 base and apex where it is brown. All femora light brown, 

 fore-femora yellow apically ; all tibias and tarsi light lemon- 

 yellow, more chitinous part of end tarsal joints black-brown. 

 Antennal joint 1 light brown, 2 yellowish tinged with brown, 

 3 light lemon-yellow with distal half light yellow-brown, 4 

 dark brown in distal half, basal half light lemon-yellow, 

 5 and 6 distally dark brown with approximately the basal 

 third and fourth light lemon-yellow ; 7 and 8 wholly dark 

 brown. The head is as long as broad, slightly longer than 

 the pronotum, with the cheeks subparallel, only slightly 

 narrowed at base and the front straight, so that the head is 

 practically square with the two fore-corners cut off by the 

 eyes. The eyes are small, the space between them wide and 



