experiments on some Lepidojjtora, 157 



APPENDIX. 



Descriptive summary of the effects of the temperature 

 experiments upon the markings of the moth Ennomos 

 autumnaria {yel alniaria). By W. White, F.E.S. 



A. — (1) Lakv^ sleeved, temperature conditions normal 



THROUGHOUT, INCLUDING (2) THE PUPAL PERIOD. 



S . Five specimens : all rather variable, more or less 

 irrorated, 



? . Two : the spotting large in one case, finer and 

 more sparse in the other ; both darker towards the outer 

 margin of especially the fore wings. 



These may be considered fair types of the ordinary 

 variations occurring within a brood. 



B. — (1) Larv^ sleeved, (2) pup^ forced. 



(? . Four : all paler and more ruddy than in A, and 

 nearly plain in colour, only one having rather faint 

 spots. 



? . Four : ditto, two with faint spots. 



General tendency. Plainer than type ; spots lost. 



C. — (1) LARV-ii FORCED, (2) PUP^ FORCED. 



(? . Eight : of more ruddy appearance, and practically 

 unspotted, not one possessing decided irroration ; the 

 costal margin paler, but the colour towards the edges of 

 the wings appearing deeper in contrast with the general 

 plainer coloration ; the band-lines less continuous, and 

 in some quite /aini ; some have local spotting more or 

 less faint or blotchy, while in others the spotting is 

 almost entirely absent. 



? . Nine : similar in character to the males, but the 

 irroration is sparse in nearly all the specimens ; edging 

 to the marginal toothing darker. 



General tendency. Ptuddier than type, on account of 

 greater freedom from superimposed markings. The 

 sexes resemble one another more closely than normally, 

 as in A, 



