Warr.—Leaf-mining Insects of New Zealand. 469 
The Pupa. (Plate 38, fig. 4; text-figs. 11, 12.). 
upation, consisting of hardening of larval skin, takes place within 
blotch-mine, and, except for a short white thread extending from anal 
aperture to floor of mine, pupa lies free within blotch. Dorsum of pupa 
evenly rounded, greatest height about middle; segments well rounded 
and become narrowed cephalad, practically devoid of sculpture, but bear 
four or five rows of very minute spines on sides anteriorly; just below 
mid-lateral line each segment slightly prominent anteriorly, an obscure 
shoulder being thus formed; in mid-dorsal line segments are somewhat 
hollowed cephalad. Anterior respirato rocesses short and set close 
together on small prominence; they project almost directly upwards and 
outwards, are expanded at tips, and are slightly overhung by first 
segment; second segment tends to overhang first, and the next to last 
segment is prominent posteriorly. Posterior respiratory processes relatively 
large and prominent, mushroom-shaped ; below them last segment bluntly 
prominent and shows the slightly sunken anal aperture. Colour of pupa 
i ark brown, assuming a black colour prior to emergence of fly, due 
to dark colour of this latter; empty pupa-cases a rich golden-brown. 
Average dimensions: Len 2-6 mm.; greatest dorso-ventral dia- 
meter, 1-2 mm. ; greatest lateral diameter, 1:45 mm. 
On dehiscence dorsal halves of first three and a half segments lift up 
in one piece, ventral halves of same segments also break away in one piece 
around transverse suture. Both plates, however, remain more or less 
attached to puparium by pieces of membrane. Emergence of fly has not 
been observed, and it is difficult to understand just how it is done: it is 
known that it emerges by means of a short slit in upper surface of leaf at 
margin of blotch; possibly this slit is prepared by larva, but no sign of it 
has been found in mines from which flies had not yet emerged. 
Duration of pupal period, about thirty days, normally. 
(14.) Agromyza umbrinella n. sp. (The Minute Veronica Blotch-fly). 
The Imago. 
= t 3 L * . 
утке е dark grey; tergites tinged with yellowish posteriorly ; sides 
and under-surface yellowish. 
Legs black. 
Wings (бо. 22) dark grey, veins black. Penultimate section of onn 
vein about one-eighth the length of the ultimate, and about one-fift as 
long as ultimate section of the fifth; halteres lemon-yellow. 
Length, 1-5 mm. | 
T vd in author's collection ; bred from mines from Woodhaugh Gardens, 
Dunedin. . pv 
Distribution. 
First discovered in Woodhaugh Gardens, 
Mr. W. G. Howes. Not by any means a commo 
Dunedin, 29th June, 1919, 
by n fly, and specimens 
