470 Transactions. 
have only been procured by rearing from the mines. Has been found 
on Swampy Hill, Dunedin; and I have found the mines at an eleva- 
tion of 3,000-5,000 ft. on north and south sides of Mount Ruapehu in 
January, 1921 and 1922 (scarce). In Dunedin imagines have emerged 
towards end of March, and during September. 
Veronica Colensoi. “hace eme 
Egg-laying and Larva. 
Eggs laid singly in minute pockets beneath under-cuticle of leaf. From 
examination of large number of specimens position of egg-pocket appears 
ape 
skeleton of final instar 0-35 mm. long, exclusive of mandibular sclerite ; 
this latter process possesses two teeth, its length being 0-07 mm. 
The Mine. (Plate 40, fig. 7.) 
т 
expanding but little; then, however, widening rapidly so as soon to occupy 
whole of one-half of leaf. Margins of gallery minutely irregular. Up to 
margin. omple E 
though the leaf had been blown out. Average length of gallery, lem; — | 
average area of blotch, 20 sq. mm. Discoloration of leaf does not extend — 
beyond boundaries of mine. Never more than one mine in a leaf. 
The Pupa. (Figs. 3 and 4.) ; 1 
Larva pupates within blotch-mine, where, except for short thre 
attaching its posterior end to floor of mine it lies free. Colour at first 
whitish, rapidly becoming jet-black. Though smaller, it is very similar to — 
na. | 
that of 4. umbri 
verage dimensions : Length, 1-86 mm.; greatest ventro-dorsal dia 
meter, 0-76 mm. ; greatest transverse diameter, 1 mm 
Duration of pupal existence doubtful—possibly not longer than thirty D 
dàys under normal conditions. Only one record in my ‘notebook: four 
co de from mine by means of minute slit in side of leaf near base. 
M 
