230 THE AMERICAN NATURALIST [Vol. XLVII 



| 3d 4th 3 . 4 







1..37 24 1.54 

 2. . 37 23 1.61 



4. . 32 21 1.52 



5a. 35 24 1.46 



56. ! 33 27 1.22 

 5c. 35 26.5 1.32 

 6.. 30 20 1.50 



Absent 

 Absent 



42 30 1.40 43 30 



38 25 L52 38 26 



37 25 1.4835 25 



39 29.5 1.3239 29 

 42 27 1.5639 27 

 41 24 1.7141 27 



33 23.5 1.40 28.5 18.5 

 33.5 22.5 1.49 29 21 

 24 15.5 1.55|23.5 15 

 39 24 1.6337 25 



1.73 46 30 1.53 

 1.5543 31 1.39 

 1.4637 26 1.42 



L34 41 30 L37 



L5239 29.5 L53 

 1.5126 17.5 1.49 



L3830 19 1.58 

 1.5728 16.5 1.70 

 1. 48)39 24 1.63 

 1.42^2 22.5 1.42 









* Length Ratio 







1. .137 24 1.54 



56 . 33 27 1.22 

 5c . 35 26.5 1.32 

 6. . 30 20 1.50 



Absent 



Present 

 Absent 



41 27.5 1.4937.5 27 



43 28.5 1.5144 32 

 35 24.5 1.43;33 23 



35 25.5 L37!35 24.5 

 40 27 1.48 39 25 

 39 25 1.56 



27 18 1.5029.3 19.5 



36 24 1.50 28 21.5 

 26 16.5 1.58|27 17 

 31 22 1.41 36 27 



37 25 1.48 35.5 23 



1.38 44 30.5 1.44 

 1.43 36 26 1.38 

 1.31 37 26 1.42 

 1.43 



1.5636 25 1.44 

 1.5030.5 20.5 1.49 

 LoO 



1.33 35.5 26 1.37 

 1.54 35 23 1.52 



