Mr. R. S. Bagnall on new Tliysanoptera. 399 



Hnh. S. Australia, Mt. Lofty Range, Adelaide ; amongst 

 a tube of thrips from flowers of Acacia myrtifoUa and 

 Epachris impressu, Aug. 9, 1914 (£". B. Potillon), Keg. 41. 



Genus Physothrips, Karny. 

 a. SeticoUis group. 



Physothrips setipennis, sp. n. 



Tliis species is very closely related to the Western 

 Australian species, Physothrips seticollis (Bagn.). The 

 antennas are brown except joint 3 which is clear yellow, and 

 the base of 4 yellowish. 



Head as long as or slightly longer than the prothorax. 

 Antennae about 2"25 times the length of the head, longer 

 than in seticol/is ; relative lengths of joints as follows : — 

 12 : 16 : 27 (with stem) : 26 : 15 : 22 : 3 : 4. 



Prothorax with the bristles at hind angles (which are 

 exceptionally slender and light in colour in seticollis) some- 

 what stout and dark, about 0"6o the length of prothorax ; 

 surface somewhat closely and irregularly set with minute 

 setaj. In seticollis these setae are regularly disposed (includ- 

 ing three widely-seated pairs down the centre), stouter and 

 about twice the length. 



Apical abdominal bristles distinctly stouter and darker ; 

 ninth tergite with a pair of rather short dorsal bristles, 

 moderately widely separated and the posterior margin of the 

 eighth tergite with a close and moderately long microscopic 

 fringe. 



Upi^er vein of fore-wing regularly set with sette for the 

 whole length as in seticollis. 



Type. Hope Department of Zoologv, University Museum, 

 Oxford. 



Ilah. Australia, Tlealesville, Victoria ; on cultivated 

 white briar, 25. i. 14 [R. Kelly). 



b. ? group. 



Physothrips f/avidus, sp. n. 



$ . — Exactly as in Thrips Jiavidus, sp. u., but having the 

 antennal style 2-segmented. 



In this case the type is distinctly of the genus Thrips, and 

 closely allied to T.Jiavus, Schr,, and this as well as Physo- 

 thrips albipes are named in the genus Physothrips as well as 



27* 



