CusHMAN: NOoTES ON MICRASTERIAS 397 
figure given by W. and G. S. West. It was a custom of Bailey’s 
to mark the drawing he considered as typical to distinguish it 
from the rest. This he did by writing the word “standard ”’ close 
to the particular drawing. In this case it is found with a speci- 
men of the basal view with very decided .prominences. It would 
therefore seem that the original specimens possessed by Bailey 
and from which he wrote his description were of the form called 
above var. tumida by W. and G. S. West. As this character is 
very variable in any lot of specimens and as the typical specimens 
seem to have had this character the value of the varietal name 
tumida is somewhat in doubt. 
Boston Society OF NATURAL HIsToRy. 
