COLOR patte:rn of pronotum. 



69 



Table 13. — Variation in the proportion between the pigmented and unpigmented areas 

 on the pronotum of L. undecimlineata, L. diversa, L. signaticollis, L. multitceniata, L,. 

 intermedia, L. decemlineata, and L. oblongata. ^ 



Classes. 







Per 



cent of frequency. 





1 



L. undecim- 

 lineata. 



1 

 L. diversa. "^ 



signati- 

 •ollis. 



L. inultitcs- 

 niata. 



L. inter- 

 media. 



^•«t?r''- L.oMon,ata. 



Class I 







... 







0.1503 



1 



... 1 



2 

















.... 



0.1503 







3 





.... 









.... 



0.4509 







4 













.... 



0.6012 







5 











.... 



I 



1.5030 







6 





.... 









2 



2.2545 







7 





.... 







0.7098 



4 



4.2084 







8 



0.712 



.... 1 







1.8928 



6 



7.9059 







9 



2.436 



i 

 .... 1 



, , 





3.3124 1 18 



28.6675 



I 



10 



3-348 



.... 1 



I 



6.6248 36 



24.9498 



3 



II 



7.308 



.... 1 



2 



103664 i 21 



16.8938 



7.2 



12 



4.872 



.... 1 ■ 



4 



23.2688 1 10 



7.6051 1 



r6.4 



13 



8.120 



.... i 



« 



19 6678 1 2 



3.7575 39.0 I 



14 



22.860 



5 ! 



16 



14.4326 1 



0.7515 



18.4 



15 



38.164 



25 i 



56 



9.^972 





0. 1503 



II. 6 



16 



12.180 



70 i 



13 



4.9686 





. . . 





3-4 



17 





.... 1 





2.6026 











18 





.... 



. . . 



2.0196 





. . . 



.... 



. . . 



19 











0.2366 













20 





.... j 



... 





.... 



,..., 





L. undecimlineata : N. ■=■ 1,230 individuals. Mean of classes = 12.92892. 



L. diversa : N. = 100 individuals. Mean of classes ^= 15.65. 



L. signaticollis : N. = 1,000 individuals. Mean of classes = 14.67. 



L. multitcsniata : N. = 4,220 individuals. Mean of classes = 12.762124. 



L. intermedia : N. = 200 individuals. Mean of classes = 9.92. 



L. decemlineata : N. = 6,650 individuals. Mean of classes = 9.647779. 



L. oblons:ata : N. = 500 individuals. Mean of classes = 13.024. 



TabIvE 14. — Position of the empirical mode of the species of the lineata group upon the 

 scale of color proportion used in the foregoing tables, and the per cent of variates in 

 the modal class, which indicates the variability of each species. 



Class. 



species. 



Per cent 



in modal 



class. 



Class. 



Species. 



Per cent 



in modal 



class. 



Class 3. 



5. 



9- 

 10. 

 12. 



ly. defecta 



54 1 

 60 



28.6675 



36 



23.2688 



Class 13. 

 16. 

 20. 



ly. oblongata 



\ Iv. undecimlineata 

 \ L. diversa 



L. melanothorax. . 



38.164 

 70 

 100 



L. juncta 



Iv. decemlineata... . 



L. intermedia 



Iv. multitseniata. . . . 



The numbers of individuals used in the above tables are large, so that the 

 probability of inaccuracy in the modes and percentages is slight, and the fact 

 that the determinations in each case are made from material taken from 

 several generations further enhances the probability of accuracy. 



The modes shown in table 14 and the variations shown in the preceding 

 tables are for the species. The modes for different generations and for 



* The empirical mode in this and all following tables is indicated by being set in bold- 

 faced type. 



