Millimeters 240 260 280 300 320 340 360 380 400 420 440 460 4S0 500 520 540 560 

 c? = I ., 1 • 5 12 18 41 37 33 18 6 I 

 9 = 2 o 3 8 5 17 17 24 45 43 32 25 19 7 4 I 



Fig. 4 Length of alimentary canal. 



Grams 



./ 



3^ 32 31 

 Total weight. 



