Mr. R. S. Bagnall on new Thysanoptera. 287 



XXXT. — Brief Descriptions of new Thysanoptera. — III. By 

 llrcHAUD y. Bagnall, F.L.S., F.E.S. (Hope Departincnt 

 ot Zoology, University Museum, Oxford). 



Suborder T E R E B R A N T I A. 



Family ^olothripidae. 



Orothrips australis, sp. n. 



Colour dark giey-brown ; hind legs, including tarsus, 

 unicolorous with body (other legs absent in the type speci- 

 men) . Mouth-cone ratlier long, reaching across prosternum ; 

 maxillary palpus 7- jointed ; labial 3 (?)-jointed. Antennae 

 dark grey-brown, apex ot" joint 2 and whole ot 3 excepting 

 distal third yellowish-white, extreme base of 4: yellowish- 

 brown; relative lengths of joints approximately: — 32 : 00 : 

 104 : 82 : 52 : 32 : 19 : 12 —joint 3 pedicellate. Very 

 narrow, wavy, elongated, membranous sense-areas in 3 and 4 ; 

 a short, straight, but otherwise similar area in 4 ; and a minute 

 sense-cone on each of the joints 5, 6, and 7. 



Fore-wings longer and narrower than in kelloggii, Moulton, 

 clear white with extreme base and a band across tip dark 

 brown, and a similar but more extensive dark band across 

 middle ; setse along costa and the longitudinal veins minute ; 

 cilia of hind fringe up to more than 2'5 times as long as the 

 greatest breadth of wing. Ail cross-veins included well 

 within the central dark area, llind-wings with light grey 

 patches corresponding with the dark areas of fore-wings. 



Abdominal segment 8 without the pair of stout spines 

 described in kellof/gii, 9 and 10 with moderately long bristles ; 

 tergite 9 about twice as long as 10, 



Differs from 0. kelloggii, l^Ioulton, in the colour and 

 relative lengths of the antennal joints, the longer mouth- 

 cone, and fewer (?) joints in labial palpi ; the longer, 

 narrower fore-wings with more extensive dark central area, 

 more minute setaj, and longer cilia ; and the lightly banded 

 hind wings. 



Moulton says that the labial palpi of 0. kelloggii are 

 4-jointed in his key to genera, but 5-jointed in describing the 

 genus and species. 



Type. In Hope Collections, University Museum, Oxford. 



IJab. AUSTIJALIA : One ? collected by Mr. A. Eland Sliaw 

 from the flowers of a native shrub, Xanthvrrhwa ausiralisj 

 Healesville, Victoria, Oct. 12, 1913. 



