Watt. — Ova of some of the Lepidoptera of New Zealand. 83 



_., _„ Ovum. Plate I, fig. 5. 



Class.— Flat. & 



Shape. — Longitudinally oval ; micropylar end much broader than its 

 nadir, and slightly flattened. Transverse section oval, top and bottom 

 flattened, and collapse a good deal as the embryo develops. 



Dimensions. — Width, 0-35-0-37 mm. ; length, 0-49-0-53 mm. ; height, 

 0-28 mm. 



Sculpture. — Strong. Surface broken up into shallow hexagonal and 

 pentagonal cells 0-02-0-03 mm. diameter. 



Micropyle. — Micropylar platform flat, about 0-10 mm. Micropyle situ- 

 ated in the centre of a rosette of eight very finely reticulated cells, sur- 

 rounded by a band of almost circular cells twelve in number and about 

 half the size of the cells forming the sculpture of the egg. Diameter of 

 rosette, 0-04 mm. 



Shell. — Fairly strong ; transparent ; shiny ; slightly roughened within 

 cells. 



Colour. — When fresh laid, pearly white, changing in a few days to a 

 bright yellow. A day or so before hatching the egg turns a dirty mottled 

 grey, and the hairs of the larva can be clearly seen. 



Note. — The eggs were laid singly and in small batches of from three to 

 five on the sides and projecting fibres of the box. Are well attached to 

 whatever they are laid on. Thirteen, twenty-five, and thirty-one eggs 

 were obtained from different moths. Laid in October and November. 

 Period of incubation, about fifteen days. Larva emerges from micropylar 

 end. 



(Described, 19th November, 1912.) 



Notoreas zopyra Meyr. 



Pasiihea zopyra Meyr., Trans. N.Z. Inst., 16, p. 89. Notoreas zopyra 

 Meyr., ib., 18, p. 184; Fereday, List N.Z. Lep., Trans. N.Z. 

 Inst., 30, p. 344 ; Hudson, N.Z. Moths and Butterflies, p. 74, 

 pi. 8, figs. 18, 19. 



This beautiful species was caught on Mount Egmont, at an elevation 

 of about 3,000 ft. Only the one specimen was seen. 



™ -™ Ovum. 



Class. — Flat. 



Shape.- — -Longitudinal section oval ; micropylar end slightly broader 

 than itia nadir. Transverse section oval. 



Dimensions. — Length, 0-63 mm. ; width, 0-47-0-44 mm. ; height, 0-37 mm. 



Sculpture. — Shell covered with a network of fairly regular shallow 

 hexagonal cells, diameter 0-09 mm. Cells largest at micropylar end. 

 Reticulations roughened. 



Micropyle. — Reticulations cease within 0-05 mm. of micropyle, which 

 consists of a green oval cell 0-03 mm. by 0-02 mm., and is raised above 

 surrounding shell. 



Shell. —Strong ; transparent; slightly shiny; roughened within cells. 

 When viewed under a high power it is seen to be covered with very minute 

 pimples, most numerous at base of egg ; even the reticulations are studded 

 with these. y^ 



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