36 



IStadii of X. (ßbsolcta and N. triritlata 



Apertnre 

 Leityth 



Class 



Locality S. 



Total frequency, 499. 



Aperture _ 

 Lengtk 



Class .. 



Frequency 



Locality 3. 



Total frequency, 369. 



'■;54-0 

 Frequency 2 



550J560 570 



5 

 58 



8 



6 j 7 

 590 60-0 



20 28 



8 

 610 



51 



.9 

 620 



54 



10 11 

 63-0J640 



63 54 



12 13 

 65-01 66-0 



27 30 



U 15 

 67-0, 68-0 



12 8 



16 17 

 69-0 70-0 



Angle: Locality 1. 

 Class ... 

 Frequency 



Angle: Locality 2. 

 Class ... I 

 Frequency 



Angle: Locality 3. 

 Class ... I 

 Frequency 



Angle: Locality Sa 

 Class ... I 

 Frequency 



