Watt. — Leaf-mining Ir^sects of ]\^ew Zealand. 



453 



outermost being the smallest, the interspaces densely irrorated with black ; 

 three rather obscure lines of white in outer J ; cilia whitish with distinct 

 band of black internally and a second indistinct one externally ; a small 

 triangular spot of white on dorsum at about \ ; two rather less distinct 

 white spots at |. Hindwings dark-grey ; cilia grey on costa, grey with 

 bronzy reflections on dorsum. 



Distribution. 

 Found pleiitifully on Mount Egniont in the vicinity of North Egmont 

 House and Dawson's Falls (3,000 ft.). Many larvae were found here in 

 April of 1917. The pupae may be obtained about the end of December, 

 and emerge during January and February. Also found at Dimedin, on 

 Flagstaff Hill, chiefly aroimd the margin of the bush. The pupae are to 

 be obtained in November ; larvae are plentiful in the early part of the 

 month. The first imagos emerged on the 16th December. 



Food-plant. 



Nothopanax Sinclairii; Nothopcmax simplex (haumakoroa), in South 

 Island. 



Egg-laying. 



The egg itself has not yet been found, but the following few particulars 

 have been gleaned from observations on young mines. The eggs are laid 

 singl}", rarely more than one or two on any one leaf, upon the upper 

 surface, and near but rarely touching the midrib, and generally in the 

 lower part of the leaf towards the stem. 



The Mine. 

 The mme is a vgry characteristic one. . It is a simple gallery throughout, 

 and vermiform in character, the loops being very closely applied to one 

 another, never anastomosing or crossing. As a rule the gallery at first 



Figs. 12, 13. — Mines of P. panacivermiforma in Nothopanax Sinclairii. 



(Natural size.) 



winds" backwards and forwards in slightly increasing distances, closely 

 applied to itself, and in a direction more or less parallel to the long axis 

 of the leaf ; then with an almost remarkable abruptness it changes its 



