NOTES ON BRITISH THYSANOPTERA. 283 
Sub-Order TuBULIFERA. 
Family Phleothripide. 
Haplothrips flavitibia, sp. nov. 
Measuremeuts.—Total body length 1:45 mm.; head length 
0-192 mm., width 0:180 mm.; prothorax length 0-130 mm., width 
0-240 mm.; pterothorax length (dorsally) 0:288 mm., width 0:332 
mm.; abdomen width about 0°360 mm.; tube length 0-128 mm., 
width at base 0:060 mm. 
Antenne: Segment . 1 2 3 4 3S. @ 7 8 
Length (u). 23 48 52 54 56 53 49 28 
Width: (2) . al) 27 26) 29. 26 <2eanaIs 14 
Total antennal length 0°37 mm. 
Colowr.—Head, body, all femora, and the first antennal segment 
dark blackish-brown. All tibiew and tarsi clear yellow (some speci- 
mens have the base of the mid and hind tibiz slightly darker, but 
otherwise exactly resemble the type specimen). The second antennal 
segment brown, paler distally, the third, fourth, fifth, and sixth 
yellow, the two latter a little clouded at the tip, the seventh and 
eighth smoky brown. Wings quite colourless except at the extreme 
base of the fore wings. 
Head a little longer than wide, widest about mid-way, cheeks 
slightly arched. Hyes not prominent; distance between the eyes 
equal to width of the eyes; distance from the eye to the back of the 
head about one-quarter longer than the eye. Ocellz far forward, 
the anterior directed straight forward on the frons, which is raised 
into a distinct sub-hemispherical hump. The only long spines on 
the head are one behind each eye. One distinct and a few faint 
striations near the hind margin of the head. Mowth-cone some- 
what pointed, reaching about three-quarters across the pro-sternum. 
Mazillary palps two-segmented, the basal segment short. An- 
tenne almost twice as long as the head. The first segment short, 
tapering slightly to the apex; the second constricted near the base 
into a neck, which is darker in colour than the rest of the segment ; 
the fourth stouter than the third, the third widest at its apical 
fifth, the fourth at its apical third, the fifth at its apical quarter ; 
the sixth and seventh more parallel-sided, constricted slightly at the 
base; the eighth conical, rounded at the tip. 
Prothorax nearly twice as broad as long, about two-thirds as long 
and one and one-third as wide as the head. A long blunt spine at each 
anterior angle and two at each hind angle, the outermost on a small 
separate sclerite; all the other spines, including the anterior mar- 
ginals, minute. Pterothorax normal. Legs normal, fore tarsi un- 
armed. Wings fully developed, constricted in the middle, Six to 
nine secondary hairs in the posterior fringe of the fore wing near 
the apex. 
Abdomen normal. Tube two-thirds as long as the head; twice 
as long as wide at the base; almost twice as wide at the base as at 
the apex. Terminal hairs as long as the tube. 
Described from six specimens beaten from a hedge of haw- 
