292 KET.LOGG AND BELL 



Class C: 129 specimens with spots i' and i"" well defined 



(fig- 57, c). 



Class D : 5 specimens with spots i', 1% 3^ and 3'' present (fig. 



57, ^)- 



Class E : 24 specimens with spots i^ i"", 4^ and 4'" present (fig. 



57, ^)- 



Class F : 7 specimens with spots i', i"" present and 2^ 2% 3' 



and 3'' dimly indicated (fig. 57, y). 



Class G : 16 specimens with spots i\ 1% 2\ 2'", 4' and 4'* pres- 

 ent (fig. 57»^)- 



Class H : 2 specimens with spots i\ 1% 3^ 3'' 4^ and 4'" pres- 

 ent (fig. 57, /i). 



Class 1 : 17 specimens with spots i\ i", 2\ 2"", 3' and 3'' pres- 

 ent and 4^, 4"", dim or absent (fig. 57, /*, t). 



Class J : 43 specimens with spots i\ i% 2\ 1% 3^ 3% 4^ and 

 4'" well defined (fig. 57, J). 



Class K : 20 specimens with spots i\ 2^ and 3^ and 1% 2" 

 and 3'" coalescent and 4' and 4'* dim or absent (fig. 57, k^ k). 



Class L: 68 specimens with spots i\ 2^ and 3^ and i'', 2'" 

 and 3'" coalescent and 4^ and 4" well defined (fig. 57, /). 



Class M : i specimen with spots i\ 1% 2% 4^ and 4'' well de- 

 fined and with 2\ 3^ and 3"" dim (fig. 57, ni). 



Class N: 4 specimens with spots i' and i'' present and an 

 additional dim spot between i^ and the position of 4^ and i'' 

 and the position of 4'' (fig. 57, n). 



Class O: specimens with spots 4^ and 4^" present (fig. 57, o). 



Class P : 3 specimens showing strong tendency to longitu- 

 dinal markings (fig. 57, f). 



The variations seem to cover most of the possible combina- 

 tions afforded by the possibilities of any one or more of eight 

 spots being absent, dim, or well defined. The bilateral cor- 

 relation of the variations is pronounced ; indeed there is but 

 one exception noted (Class M). The mode is the presence of 

 spots I and i alone, but well defined (Class C; Class B is really 

 but a subdivision of the mode). Next to the modal class comes 

 that in which all the spots are present, with three on each side 

 coalesced to form a diagonal line (Class L ; Class K is also 

 but a subdivision of this next to the modal class). Third 



