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



Type. In Coll. Bagnall, University Museum, Oxford. 



Hah. CANADA, Semans, Sask. ; 1 ? and 2 $ $ on Petalo- 

 stemon purpureum, 4. viii. 1917 (A. E. Cameron, no. 27). 



Genus Euthrips, Targ-Tozz. 



a. Sixth antenna! joint entire. 



Euthrips cit?icinctus, sp. n. 



Length c. 1*0 mm. 



Head, pronotum, abdominal segments 1, 2, and 6 to 10 

 deep blackish chestnut-brown ; pterothorax brown, abdo- 

 minal segments 3 to 5 and base of 6 lemon-yellow. Fore- 

 wings tinted light greyish-yellow, basal fourth lighter and a 

 darker ill-defined brown patch in the second fourth. Hind- 

 wing with dark median vein extending into distal fourth. 

 Anterior legs yellow ; intermediate pair of femora yellow 

 faintly shaded with grey-brown (the rest of the middle pair 

 of legs are not present in the type-specimen) ; hind-femora 

 3 r el low-brown ; tibige yellow tinged with grey to grey-brown. 

 Antennas brown, with joints 3 and 4 light greyish-yellow, 3 

 being lighter than 4, extreme base of 5 yellowish. 



Head 0*9 as long as broad, rounded between eyes ; dorsal 

 surface posteriorly transversely striate. Eyes moderately 

 coarsely facetted ; ocelli rather widely separated, with strong 

 crescentic hypodermal pigmentation ; mouth-cone long. An- 

 tennse about 1*5 or 1*6 times as long as the head. Relative 

 lengths of joints 4 to 8 as follows *:— 10 : 10 : 14 : 3 : 4. 



Pronotum quadrate, as long as the head, slightly broader 

 basally, where it is 0"8 (or more) as broad as long. 



Pterothorax about as long as broad, mesothorax broader 

 than the metathorax. Wings reaching to the eighth abdo- 

 minal segment, fore-wings broad, about fourteen times as 

 long as broad across the middle ; spines very minute, 8 or 9 

 on the upper and 8 on the lower vein ; lower fringes of all 

 wings wavy. 



Abdomen elongate-ovate, distally obconical. Tergite 8 

 with a fringe on posterior margin ; the lateral setaj each on a 

 broad triangular base. Segment 10 open dorsally. Apical 

 bristles fairly long, dark. 



This species very closely approaches Karny's E. flavi- 

 cinctus from Java. I am unable to identify it with his 



* On account of the angle at which the basal part of each antenna is 

 mounted, I cannot give a description of joints 1 to 3. 



