II. Onslow i>19 



of diainond-shaiKMl (lots iimlrr tin* onin^f value of thr upproprijit^' 

 insect 



In prt*|}firin^ the rurvcH Ui nhow the diHtribution of tin- <*o|nur 

 remlin^. the scxos won* iit first kept s«'|Mirat4'. In family 'IGA (srf 

 Fi^. 21) the females have Imvii shown al»»ne. just iwlnw the eurvr which 

 oomprisi\M b«»th wxes. Possibly there is a slii^ht t«'nileney for the fi'inai* .s 

 to be jMiler than the males, ami in the family in «jm'stion it can be sc«ii 

 that nither a larger pn)jM)rtion than usual of the pah'r forms are female. 

 On the wht)le, however, the sex apiM'ai-s to have little etVeet. Acconlingly, 

 elsewhen.' individuals of b<ith sexes have been treatiMJ together. Further, 

 in the cnxsses, the ^iex «)f the yellow parent appeaix t-o have no etfeet on 

 the offspring. 



(e) Table of families, and pedigree. 



In many of the families there occur some of the varieties which arc 

 describe<l on pp. 220 — 223. Their names have been given below th«' 

 curves showing the distribution of the colour-values at the end of the 

 paper, and to the right of the name is shown the sex and the number 

 of the insect in the curve. These numbei-s refei* of coui-se to the figures 

 along the base line of the curve, so that any individual ciin be looked out, 

 and the colour-value rea(J off from the curves. For instjince in family 

 '16G (see Fig. 24) the variety violacea occui*s. It is marked cT 24. 

 From the colour- values of the curve it may be seen that the 24th 

 insect is [r0:0"4]. The colour- value of any other variation may be 

 looked up in the same way. When, however, several families are com- 

 bined in a single curve, a difficulty arises. There is nothing to show in 

 a compound curve which in.sects belong to which family, and theivfore 

 it cannot be found from inspection which individuals in a given family 

 do not .show the pjirticular variation under consideration. 



Reference to Table I will give this information, as the sex and 

 number of every individual in each ftimily has been there tabulated. 

 The gametic con.stitution of every insect used for breeding, ;is indicated 

 by the offspring, is shown by the symbols employed in the pedigree 

 (see Table II). The .sex, colour-value and any other details known are 

 also given, and the colour-values of all the offspring may be determine<l 

 by reference to Table I and the appropriate figure. All the details 

 subsequent to 1914 have been comjxjsed from my own data. F(»r reconls 

 previous to 1914 I am indebted to the Rev. (i. H. Raynor, wh<» also 

 gave me my original material. A few of the insects bred before 1914 



