Suter. — On Neiv Zealand Mollusca. 



241 



the result is contained in the following table. [The ciphers i. 

 to xi. in the table indicate — i. Length of shell, ii. Greatest 

 height, iii. Index of height (length — 100, height in % of it). 

 iv. Distance of greatest height from anterior end. v. Index of 

 position of greatest height (length — 100, distance of greatest 

 height in % of it), vi. Diameter, vii. Index of diameter 

 (length = 100, diameter in % of it), viii. Length of hinge line. 

 ix. Distance of beak from anterior end of hinge line. x. Um- 

 bonal index (length of hinge line — 100, distance of beak from 

 anterior end of hinge line in % of it), xi. Cardinal index (length 

 of shell = 100, length of hinge line in % of it).] 



16— Trans. 



