COLOR PATTERN 01- EPICRANIUM. 



73 



Table 17. lariation in t/ie proportion between the. pigmented and unpigmented areas in 

 the epicranium of L. undecimlineata, L. diversa. L. signatieollis, L. multiteeniata, 

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



L. undecimlineata : (Panama, Costa Rica, Nicaragua, Guatemala, Mexico). N.= 1,230 



individuals. Mean of classes = 7.5447. 

 L. diversa : (Jalisco, Mexico). N. = 100 individuals. 

 L. signatieollis : (Mexico). N. = 1,000 iudividuals. 

 L. multitirniata : (Mexico). N. = 4,230 individuals. 



9; less, class 5. Mean of cl asses = 7.2733. 

 L. oblongata: (Mexico). N. = 3,170 individuals. Mean of classes = 4. 9303. 

 L. decemlineata : (United States and Canada). N. = 6,650 individuals. Mean of 



classes = 4.000. 

 L. intermedia : (Mexico). N. = 100 individuals. Mean of classes = 4.0200. 



Mean of classes = 7.58. 

 Mean of classes = 8 45. 

 Empirical modes = greater, class 



Table 18- 



-Position of the empirical mode of the species of the lineata group upon the 

 scale of color proportion used in the foregoing tables. 



Comparison of the epicranium and pronation in the lineata group. The color 

 pattern of the epicranium shows, as far as the proportion of pigmented to 

 unpigmented areas is concerned, essentially the same phenomenon as that 

 exhibited by the pronotum that is, the modes for the different species are 

 located at various points along the scale of proportion used. If we compare 

 table 18 with table 14, which gives the position of the modes of the pro- 

 notum, we see that in the main the position of the modes for each species is 

 the same in both tables. In both me/anot/iorax occupies the highest place 

 and defecta the lowest, while undecimlineata and diversa are in both cases in 

 the same modal class. Signatieollis changes its position in table 18 to one 



6 T 



