TABLE 33. Parti 
of 1909 serie 
groups. 
ro---n-e-e 
12.65 12.95 18.25 138.55 18.85 14.15 14.45 14.75 15 
Shell, length (mm.) 
Sil Ss} 6s Gh GO Gal OB ths 
Shell, width (mm.) 
| 59.5 60.5 61.5 62.5 68.5 64.5 65.5 -66.5 67 
Shell, proportions (%) 
