Watt. — Ova of some of the Lepidoptera of New Zealand. 81 



Elvia glaucata Walk. 



Elvia glaucata Walk., I.e., p. 1431 ; Butl., Cat. Lep. N.Z., p. 18, and 

 Cist. Ent., 2, p. 509 ; Meyr., Trans. N.Z. Inst., 16, p. 65 ; Fereday, 

 List N.Z. Lep., Trans. N.Z. Inst., 30, p. 339 ; Hudson, N.Z. 

 Moths and Butterflies, p. 46, pi. 6, figs. 23, 24. 



I have only taken four specimens of this moth in Wanganui this 

 summer. 



Ovum. 



Glass.— Flat. 



Shape. — Oval. Micropylar end broader than its nadir, and slightly 

 flattened. Top and bottom somewhat compressed, but their surfaces 

 slightly convex. 



Dimensions. — Length, 0-54-0-58 mm. ; width, 0-42-0-40 mm. ; height, 

 0-35 mm. 



Sculpture. — Delicate. Fine reticulations form a network of five- and six- 

 and occasional seven-sided cells, though mostly regular hexagons about 

 0-03 mm. diameter. Sculpturing at micropylar end roughened, blurred, 

 and indistinct. 



Micropyle. — A small slightly raised circular cell in midst of rosette of 

 seven elongated cells. Darker in colour than rest of egg. Inner reticu- 

 lations of rosette very indistinct. Total diameter, about 0-04 mm. 



Shell. — Strong ; shiny ; transparent ; smooth within cells. 



Colour. — Pearly white, changing in a day or two to light yellow, and 

 later to a bright yellow. A few days before hatching it turns alight grey, 

 which darkens to a mud-colour. The larva is now plainly seen. 



Note. — -Laid singly, at intervals of a day or so. Strongly attached 

 to object. Laid from September to October. Period of incubation, eight 

 days. The larva emerges at micropylar end. 



"(Described, 27th September, 1912.) 



Tatosoma timora Meyr. 



Tatosoma agrionata Meyr., Trans. N.Z. Inst., 16, p. 68. T. timora 

 Meyr., Trans. N.Z. Inst., 17, p. 64 ; Fereday,' Trans. N.Z. Inst., 

 30, p. 340; Hudson, N.Z. Moths and Butterflies, p. 40, pi. vi, 

 figs. 28, 29. 



Very plentiful in Wanganui at times. 



™ th Ovum. 



Class.— Flat. 



Shape. — As viewed from above, oval ; micropylar end flattened, and 

 broader than its nadir, which in some cases is also slightly flattened. Trans- 

 verse section oval; top and bottom much flattened. 



Dimensions. — Width, 0-49 mm. (at micropylar end) ; length, 0-63 mm. ; 

 height, 0-35 mm. 



Sculpture. — Strong. Reticulations forming a network of irregular 

 pentagonal and hexagonal cells about 0-02 mm. diameter. 



Micropyle. — Situated in a broad, saucer-like depression about 0-22 mm. 

 diameter. The micropyle consists of a minute circular cell within a rosette 

 of about eight elongated cells. Diameter of rosette, about 0-08 mm. The 

 whole is very indistinct. 



