MEWETT ; YORKSHIRE MACRO-LEPIDOPtERA IN 1897. 161 



however true this may be en moyenne it is not always the 

 case according to my experience. 



3rd. — Time of emergence of each particular species bred, 

 together with times of unusual emergence when noted. 



4th. — The proportion of male to female moths of any species 

 bred, whether the male or the female varies the most ; 

 state whether this latter information is suppUed from wild 

 or bred specimens ; and numbers of each sex examined. 



Darwin states from information he received that the 

 male moth is more liable to vary than the female, but my 

 experience has taught me that to this rule there are 

 many exceptions. 



5th. — Instances where the male larv« can be distinguished 

 from the female, and by what means. 



6th. — Records of the earliest and latest dates on which any 

 particular species is seen. 



7th. — Instances in which the male moth has copulated with 

 more than one female, and whether the eggs resulting 

 from each pairing were fertile or infertile. 



8th. — The number of eggs laid by any particular species. 



9th. — ^Any remarkable and not generally known protective 

 resemblances occurring in the oval, larval, pupal, or imago 

 state, with as full details as possible, 

 loth. — Assembling. Particulars of the different species of 

 female moths found to be attractive to many males, to- 

 gether with the time of day or night when this attraction 

 was at its height ; whether tlie assembling ceases as soon 

 as copulation takes place, and whether preference is 

 shown by the female for any particular male, 

 nth. — The hours of flight of any particular species of moth; 

 also the time of day or night at which the larvae of any 

 species feed, together wtth the names of any unusual food 

 plant on which they are found. 

 1 2th. — When sugaring, to note the direction of wind, whether 



