ON UROTHRIPS PARADOXUS. 
129 
arid extremely minute tooth, if one may so call it, is discernible at each 
hind angle of the prothorax in the female, and this I cannot detect 
in the male. Each pair of coxæ is widely separated, the space between 
the hind ones being the. greatest. The outer edge of each fore-coxa 
projects slightly beyond the sides of the prothorax. The fore-leg (PL III. 
fig. 9) is enlarged ; the femur is rounded at the outer angle and is 
very broad, and the tibia is also short and broad, whilst the tarsus in 
both sexes is apparently without a tooth. The surface of the fore-femur 
and tibia is somewhat strongly scabrous. The intermediate and hind¬ 
legs are moderately short and stout. 
Abdomen. The abdomen is broadly jointed to the metathorax, 
and is about two-thirds (0*66) the length of the whole insect, being 
widest at the second segment, where it is a little wider than the meta¬ 
thorax, the segments gradually decreasing in width from the fourth 
segment to tube, being slightly more slender and more gradually 
narrowed in the female than in the male. The body-segments one to 
eight are strongly transverse, whilst each of the segments three to eight 
is armed with a strong, downwardly-directed spine, set in a protube¬ 
rance, or wart, at each posterior angle, these spines overlapping (and 
laterally protecting) the segmentation. 1 The ninth segment is' elongated, 
and narrowed from the basal third to base of tube, being a little láss 
than twice as broad at base as at apex, and one-eighth (0*125) longer, 
than its greatest breadth. There is an irregular series of longitudinal 
wrinldes from the first segment to the tube, whilst the dorsal plate of 
each segment is, under high magnification, sparsely and irregularly 
perforated, these very minute perforations being most likely seta-pits, 
a few having what appear to be extremely short and minute setæ, 
out of all proportion to the size of the pit from which it appa¬ 
rently spring. The tube is a little more than four-fifths (0*85) the 
length of the head, and nearly five times as long as broad; the sides 
being more or less parallel, to the apical fifth, and then narrowed to 
the extreme apex. The tip of the tube, or, as Buffa has shown it to 
be, the eleventh abdominal segment, is encircled by six long hairs or 
bristles, the form of which differs considerably in the sexes. In the one 
sex ( j ) each hair is tapered very gradually from the base to the 
extreme apex, and is at least three times the length of the tube (PL III. 
1 Near the base of each of these lateral spines on segments three to eight 
there appears to be at least two very minute papillae. They are, however, extremely 
difficult to discern with entire satisfaction in the specimens uncler consideration, 
and are not shown in the figures. 
Annales Musei Nationalis Hunyarici VII. 
9 
