Mr. R. S. Bagnall on new Thysanoptera. 591 



A pair o£ straight lateral l)ristlc.s on 8 reaching beyond 

 the mitklle of 1), and 9 and 10 furnished with long bristles, 

 lonoor than the segments bearing them, and those on 9 over- 

 reaching the tip of 10. 



Ilah. W. Sarawak, Mt. Matang ; 1 ? caught on the 

 wijig, December 1913 {G. E. Bri/ant). 



Tfcniothrips seticolUs^ sp. n. 



? . — Length 1*3 mm. 



Dark grey-brown, thorax yellowish in part, head darker 

 than the prothorax. Antonnro with joint 1 yellowish-brown, 

 2 li^Iiter, 3 yellow, 4 to 8 greyish-brown, with 4 lighter 

 basally. All femora yellowish to grey-brown ; tibia3 yellow, 

 lightly shaded to grey or grey- brown ; tarsi yellowish. 

 Fore-wings light greyish-brown, basal fourth white. 



Head nearly as long as broad, cheeks swollen and eyes 

 prominent; surface transversely striate. Eyes coarsely 

 facetted, pilose. Ocelli on a prominence, large, jjosterior pair 

 placed close to inner margin of eyes and well back, anterior 

 one forwardly directed. 



Antennae at least twice as long as head ; joints 3 and 4 

 fusiform, practically subequal ; 5 about 0*85 the length of 4, 

 and G practically as long as 4, the two-jointed style very 

 short, only 0'3 the length of joint G. Forked trichomas 

 on 3 and 4. 



Prothorax slightly longer than the head and about 0*8 as 

 long as broad ; the two long bristles at each hind angle 

 slender and more than 05 the length of prothorax. Surfaco 

 and side Sj)aritigly set with somewhat longish set£e, mostly 

 curved and directed backwards. Fore-Ie^s stouter than the 

 others and (with hind and intermediat'i legs) also set with 

 rather long curved setae; the hind-tibiai furnished for the 

 length of the inner margin with a double row of straight 

 setai, terminating distally with a pair of stout yellow spines. 

 Pterothorax more than twice as long as the pronotum and as 

 broad across mesonotum as long. Wings long, reaching to 

 the eighth abdominal segment. Fore-wings pointed distally ; 

 upper vein furnished with 19 and lower vein with 17 mode- 

 rately long setae. Setae on costa 27, increasing in length 

 towards apex of wing ; upper fringe sparse, delicate ; lower 

 fringe wavy. Abdomen elongate-ovate, broader than the 

 pterothorax and ap|)roximately 2'5 times as long as broad ; 

 segments 8 and 9 sharply narrowed to base of 10 ; 10 open 

 above. Abdominal bristles light brown, those on 9 and 10 

 longer than the segments bearing them. 



