KUTRICHA QUERCIFOLIA. 207 



rj. var. cerridi 'folia, Feld., li Wien. Ent. Monats.," vi., p. 35, no. 4b (1862) ; 

 Kirby, "Cat.," p. 823 (1892); Staud., "Cat.," 3rd ed., p. 123 (1901).— Differt a 

 nostra specimen ex montibus prope Ning-po allatus alis levius dentatis, strigis 

 paginae superioris obsoletis strigaque paginae inferioris nigra omnino absente (Felder). 



Ccrridifolia is a very marked and distinct eastern race, with the 

 ground colour of a bright red-brown tint, and the costal margin of the 

 hindwings of both males and females bright orange. The transverse 

 lines are not particularly strongly marked, and there appears to be a 

 tendency for three transverse shades to be exhibited — one towards 

 the apical area, a second medially, the third on inner margin. Two 

 worn ? specimens in the Brit. Museum collection are ochreous in 

 colour. Staudinger diagnoses it (Cat., 3rd ed., p. 123) as: " Al. strigis 

 obsoletioribus, al. post, margine anter. late ochraceo-maculata. 

 Japan, Corea, northern China, Ussuri (cum trans.)." 



Egglaying. — Two eggs laid by a wild ? on the underside of 

 an apple leaf, others in confinement laid on gauze in a loose and 

 irregular patch (Burrows). The eggs for the most part placed on 

 their sides, but individual eggs vary in this respect (Bacot) ; ova 

 deposited on buckthorn, whitethorn, and willow, on underside of 

 leaf, usually two or three eggs on the same leaf, at Worcester 

 (Hancock); three eggs found August 9th, 1899, at Henny, deposited 

 on underside of a sallow leaf, quite at the apical end, and close 

 together (Ransom) : the eggs are often laid more or less on each 

 other, four, five, six or more in a small group or heap 

 on a twig (Chapman). The eggs are laid singly on the leaf of 

 Prunus sfiinosa, and hatch in about 14 days (Moncreaff). Brandt 

 and Krancher note (Psyche, hi., pp. 363-4) 580 fertile eggs laid 

 by one $ , and J. A. Clark records the enormous number of 1050 

 eggs from a single female. Graber observes that the embryo during 

 development is at first without appendages on the abdominal 

 segments, and that when they do appear they develop only on 

 those segments on which they persist in the adult. His paper on 

 the embryology of this species is published in Denks. Ak. Wien, 

 lv., pp. 109 — 162, pi. i-viii. 



Ovum. — The egg is long, flattened at top and bottom, and may 

 be almost as satisfactorily described as being brick-shaped, as 

 cylindrical, neither of which terms however, are suitable. Length : 

 breadth : height : : 4 : 3 : 2|. The egg is very remarkable 

 with its green rings marked so conspicuously on the white ground 

 colour. These green lines pass round the egg longitudinally, 

 forming a central dot and an outer oval ring on both the upper and 

 lower halves of the egg. Another ring runs centrally round the 

 egg, broken, however, at the poles, where there are one or more 

 smaller green points. The shell is minutely pitted, each pit forming 

 the centre of a minute hexagon, the surface being covered with 

 a minute irregular hexagonal reticulation. The micropylar area 

 forms a round green spot at one pole of the egg ; it comprises a slight 

 depression, the cells of which are somewhat more regular on the 

 sides of the depression, and end in a stellate structure (the micropyle 

 proper) at the lower point of the depression. The egg is somewhat 

 opalescent, the green markings appearing distinctly beneath 

 the surface reticulation. [The eggs described had been laid 

 in heaps loosely, and were received from Mr. Nevinson. They 

 were deposited June 29th, and described July 7th, under a two-thirds 



