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



A pair of straight lateral bristles on 8 reaching beyond 

 the middle of 9, and 9 and 10 furnished with long bristles, 

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

 reaching the tip of 10. 



Hah. W. Saeawak, Mt. Matang; 1 ? caught on the 

 wing, December 1913 {G. E. Bryant). 



Tceniothrips seticolUs, sp. n. 



? . — Length 1*3 mm. 



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

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

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

 basally. Ail femora yellowish to grey-brown ; tibise 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 

 ])rominent; surface transversely striate. Eyes coarsely 

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

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

 one forwardly directed. 



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

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

 and 6 practically as long as 4, the two-jointed style very 

 short, only 0*3 the length of joint 6. Forked trichomes 

 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 0"5 the length of prothorax. Surface 

 and side sparingly set with somewhat longish setse, mostly 

 curved and directed backwards. Fore-legs stouter than the 

 others and (with hind and intermediate legs) also set with 

 rather long curved setse ; the hind-tibia3 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 seta3. Setse 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 approximately 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. 



