166 



often proved, two or three varioties of russata appeared in the same brood, for 

 example saturata and perfuscata from eggs of centum-notata, and again centum' 

 notaia from eggs of comma-notata ; on the other hand, neither the type imma/nata, 

 nor the variety marmm-ata, produced any ofifspri?ig differing in depth of colour from 

 themselves ; still, I quite expect that further experiments in breeding them will 

 clearly prove that these are varieties of one good species ; and that Mr. Doubleday's 

 opinion (that there are two, no more and no less than two species of Cidaria to be 

 made out of all the moths to which the various names enumerated in this paper 

 have been given,) maintained by him so long in face of the opposition of Continental 

 Entomologists, and one may add, the negligence of those nearer home, will be fully 

 borne out by facts in every point. 



I subjoin compai-ative descriptions of the eggs and larvae, the latter made from 

 living specimens, and rendered more exact by the help of Mr. Buckler's pen and 

 pencil ; it was a great satisfaction that in the second week of July we were able to 

 put full-grown larvae of the two species side by side for comparison, but I am sorry 

 I was not able to make fuller notes of their changes after each moulting. 



The eggs of russata are of a flat oval shape, in colour a very pale ochreous, 

 resembling that of a pale tinted chip box. The larvae when first hatched are dirty 

 whitish, and somewhat translucent ; after a change of skin they become greenish, 

 and some individuals soon acquire a pink spiracular stripe, which, however, occa- 

 sionally disappears again at the last moult. When full-fed, fine individuals (the 

 hybernated larvae were finer than the summer broods, and resulted in finer moths,) 

 attain the length of l^^inch, in shape they are rather long and slender, the head 

 round but flattish above, the anterior segments a good deal wrinkled, the spiracular 

 region puckered and projecting, thus giving the whole larva rather a flattened ap- 

 pearance; the two anal points a cwfe. The gi'ound colour varies from a yellowish- 

 green to a light tint of full green ; the slender dark green dorsal line is bordered by 

 the ground colour; the sub-dorsal line pale yellow, or yellowish-white ; in some in- 

 dividuals there is a broad purplish-red stripe extending from 2nd to 13th segment, 

 and including the ventral and anal pairs of legs, in others this is of a rose-pink, 

 and is much narrower, and extends from 3rd to 10th segment ; others again have 

 only a row of 5 or 6 irregular dashes of pink, whilst in a great many there is no 

 pink whatever to be seen, but instead a slender stripe of a dark tint of the ground 

 colour running along the spiracles ; segmental folds yellow, dots and spiracles 

 whitish, anal points sometimes pink, sometimes green. 



The eggs of immanata do not differ from those of ')-ussata in shape, but in 

 colour are yellowish, sometimes lightish red ; the newly-hatched larvae are yellow, 

 nearly as yellow as the pollen of the flowers of the wild strawberry ; this seemed 

 to me a very strong mark of distinction from russata, and was possessed by the 

 larvae both of the type and the variety (marmorata), which, in fact, at every period 

 of growth were identical in colour and markings ; after the first moult they become 

 more greenish. When full grown they attain the length of about l^inch. In shape 

 they much resemble Riissata, only they seem more cylindrical, and the anal points 

 are blunt ; the ground colour is a dull, pale yellowish or whitish-green ; the dark 

 green dorsal lino bordered by a s.pa,ce paler than, the ground colour, the sub-dorsai 



