ON UROTHRIPS PARADOXUS. 
127 
Urothrips paradoxus n. sp. 
Measurements. Total length of insect 1*05 mm. Head: length 
0*15 mm., breadth 0*135 mm. Prothorax: length 0*1 mm., breadth 
0*19 mm. Width of metathorax 0*23 mm. Width of second abdominal 
segment j 0*235 mm., d 0*25 mm. Length of ninth abdominal segment 
0*115 mm. Length of tube 0*15 mm. 
Coloration. The color of the head, prothorax, mesothorax, fore¬ 
legs, and intermediate and fore-coxæ is dark brown, with the fore-coxæ 
and the sides of the head, prothorax and mesothorax darker, and, 
excepting the fore-legs, irregularly splashed with crimson hypodermal 
pigmentation. Intermediate segments of the antennæ colorless, the basal 
and the sixth joint each tinged with yellow, and the apical joint of a 
light brown color. The metathorax and abdomen, as well as the hind 
legs, and the intermediate femora, tibiæ and tarsi, are pale lemon- 
yellow, the abdomen being shaded with a line of irregular darker mar¬ 
kings down the centre and each side. The hypodermal pigmentation, 
already noticed in the head, prothorax and mesothorax, is very conspi¬ 
cuous in the abdomen, where we find a line, or series, of crimson 
splashes down each side from the metathorax to the ninth abdominal 
segment, and a line of similar, but smaller irregular markings down 
the centre from the second to the eighth segment. 
Head. The head is only slightly, about one-eighth (0*125), longer 
than broad, and one-half (0*5) longer than the prothorax; it is broadly 
rounded before the eyes, and has the cheeks parallel, with a slight 
constriction before the base. From below the eyes to the base, in the 
centre, the dorsal surface is strongly reticulated, whilst the sides and 
the fore-part are roughly scabrous. The eyes are comparatively small, 
having the facets large, and massed together without apparent margin ; 
and the ocelli are absent. 
The antenna is only slightly longer than the head, set below the 
vertex, and having the basal joints well-separated. The first joint is 
short and apparently cylindrical ; the second globose, and the third 
sub-globose, both these joints being strongly constricted at the base, 
and cup-shaped distally, thus forming a stem; the fourth joint is quadrate, 
as broad as the third at apex, and as long as broad; the fifth is as long¬ 
as the fourth but narrower ; the sixth is narrower again, threequarters (0*75) 
the length of the preceding, and slightly constricted at base, whilst the 
apical joint is of an elongated conical form, or pyriform, being narrower 
at its broadest than the penultimate, and equal to it in length. The 
second segment is peculiarly like the berry of the Yew (Taxus baccata) 
