210 Mr. R. S. Bagnall on new Thysanoplera. 



Tube 0*65 the length of head, less than twice as long as 

 wide at base, and approximately twice as broad at base 

 as at apex. Abdominal bristles s >mewhat long and slender, 

 colourless ; those at apex of tube also slender, about as long- 

 as tube, fuscous basal ly. 



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



Bab. S. AUSTRALIA, Adelaide, Mount Lofty Range, 1 ? 

 from flowers of Acacia myrtifolia or Epachris impressa, 

 Aug. 9, 1914 ; Outer Harbour, from flowers of Mesonbryan- 

 themum, Aug. 28th, 1914 (E. B. Poulton). Reg. 41 and 43. 



Ilaplothrips melanoceratus, sp. n. 



This species agrees in almost every respect with II. ro- 

 bustus, sp. n., but may be sharply distinguished by the fact 

 that the antennal segments 1-8 are all entirely of a uniform 

 dark grey-brown. The tube is not so stout and the pronotum 

 is more than twice as broad as long. The unique example 

 appears to be slightly teneral, and, excepting for the antennas, 

 is noticeably lighter in colour. 



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



Hah. S. AUSTRALIA, Adelaide, Outer Harbour, in flowers 

 of Mesonbryattthemum with //. robustus, 28. 8. 14 (E. B. 

 Poultoii). Reg. 43. 



c. Wings clear, very slender distally } parallel-sided, with 

 median constriction almost lost. 



Ilaplothrips tenuipennis, sp. n. 



5 . — Length 1*5 mm., breadth of mesothorax 0*32 mm. 



Colour chestnut-brown, end of abdomen inclined to be 

 lighter, and tube lighter distally than basally. Fore-tibia? 

 and the extreme apices of intermediate and hind tibia? lemon- 

 yellow, the fore-tibise tinted with light grey-brown basally 

 and towards margins; all tarsi light lemon-yellow. Antennal 

 segment 1 concolorous with head, 2 yellowish distally ; 3 to 6 

 yellow, 5 and 6 in some specimens shaded lightly with grey 

 distally; 7 and 8 uniform light brown. Wings clear, faintly 

 fuscous at bases. 



Head as broad as long and l - 3 times as long as pronotum ; 

 postocular bristles moderately long, about 022 the length of 



