Length 



^ Number 



3 

 Oq 



r-f 



3" 

 O 





O 



106.72 



117.39 



129.13 



142.04 



156.25 



171.87 



189.06 — 207.97- 



207.97 — 228.76 



228.76 — 251. 64 4- -I 



251.64-304.49- 



304.49 — 334.93 



Fig. 24. — Amphidiscs 



