412 Mr. R. S. Bagnall on new Thijsanoptera. 



lionour, niul, pecondly, on account of its general interest in the 

 liplit of Mr. Reginald Kelly's "^ recent ])aper " Observations 

 on the Function of Acacia LeaE-glands," wherein he mentions 

 that microscopic insects, some white (? larval) and others 

 bro\vn, are sometimes found in the so-called *' glands.'^ 



7?. fropgatti, apart from its minuteness, may be distin- 

 guished by its very broad form, the broad intermediate 

 antennal joints, the very short and broad prothorax and 

 abdominal segments, and the short broad tube,'&c. 



Ixhopalothrips hrunneus, sp. n. 



$ . — Length about 1'25 mm. 



Apterous. Very like R. froggatti^ larger and more slender. 

 Dark black-brown, fore-tibije yellow near ajjcx, other tibise 

 and all tarsi as in R.Jrongntt'i. .\ntennai with joint 3 yellow 

 shaded with grey, 4 and 5 light brown, yellowish basally, and 

 6 with stem 3'ellowish. 



Head as in P. froggatti, about as wide as long ; antennee 

 1'8 times as long as the head, intermediate antennal joints 

 not so broad compared to their length as m froggatti. 



Prothorax 0'75 as long as the head and 2"25 times as broad 

 as lorig. 



Abdomen elongate, roundly narrowed from segment 7 to 

 base of tube ; segment 4 about 4:'5 times and 7 about 3"8 

 times as broad as long. Tube about 0"75 the length of head, 

 nearly twice as long as broad at base and about 0'5 as broad 

 at apex as at base ; terminal hairs pointed, a little more than 

 0'5 the length of the tube. 



All setae as m froggatti, but longer. 



Type. Hope Department of Zoology, University Museum, 

 Oxford. • 



Hdh. Australia, Victoiia, on Acacia dealbata, 2 ?s 

 (R. Kelly). 



Sharply distinguished from froggatti by its larger size, 

 deeper colour, the coloration and more slender form of inter- 

 mediate antennal joints, the less broad form, &c. 



The coloration of hoih. froggatti and hrunneus distinguishes 

 them from the genotype, R. bicolor, Hood. 



* Vict. Nat. XXX., Nov. 1913, pp. 121-127. 



I 



