Warr.— Leaf-mining Insects of New Zealand. 479 
The ihe. (Plate 39, fig. ag 
ves to maintain its own galler : the blotch is is a fortuitous structure, 
ost ae plentiful, black, semi-viscid. Colour of blotch dark grey- 
brown r parts, dark green where fresh, with pale margins. 
M сой oci objects on upper sides of leaves; blotches are from 
l sq. em. and upwards in size. Individual galleries may average 7 cm. 
in length. Midrib forms no obstacle. ^ Herring-boning " not as heavily 
marked as in mines of veronica-flies. Full-grown larvae escape through 
small slit in upper cuticle. Margins of gallery very irregular. The dry 
cuticle over blotches soon becomes much wrinkled. 
The Pupa. (Figs. 7, 8.) 
Leaving mine, larva descends, but does not appear to enter ground. 
Colour of fresh pupa light yellovish-brown, but within twenty-four hours 
black. D 
in mid-dorsal line. A single row of minute dark-coloured dots between 
segments. Anterior respiratory processes small, short, and close together ; 
posterior pair large, mushroom-shaped, or prominent tubercles. Antero- 
lateral shoulders not develop 
Average dimensions : Length, 9-79 mm. ; greatest dorso-ventral dia- 
meter, 1:17 mm. ; greatest transverse diameter, 1-38 mm. 
Duration of pupal stage, twenty days and upwards. 
(19.) Agromyza clianthi n. sp. (The Clianthus-fly). 
. Male. Frons, al i, genae, and proboscis yellow; antennae darker 
yellow, brownish ee "e rut black, pubescent; eyes very dark reddish- 
rown; occiput and ocellar triangle "black; each orbit with three strong 
bristles ; ocellar bristles weaker and shorter than the post-verticals. 
Thorax dark grey upon dorsum, lateral margin in front of wing-base 
broadly yellow, pleural sutures yellow; four pairs of dorso-central bristles, 
anterior two pairs much weaker than posterior, setulae between them long 
and sparse, arranged in two irregular series ; scutellum broadly yellow 
Ж. 
dark grey above, posterior margins of tergites slightly 
BC esr аны margins yellow 
egs—femora yellow, brownish near costa ; 
brownish-grey. 
tibiae and tarsi dark 
Win 27) pale-greyish, veins black, extreme base yellowish ; 
ieee be deum mate section of fourth vein one-sixteenth 
as long as ultimate, and one-ninth as long as ultimate section of fifth. 
