PLATE CXXVI. 
PAQB 
Figs. 1-2. Sept.^steea marylandica (Conrad) encrusting young, de- 
scribed by Conrad as Astrea marylandica 444 
la, lb. Two views of the same specimen. Greatest length of the 
Pecten shell 112 mm. Note the protuberance that has been 
formed. 
2. Calices of another specimen. The " d " 's indicate dissepi- 
ments, and show how new zoids are formed by dissepi- 
mental budding. The calice at the bottom of the figure 
has apparently divided by fission. The greatest distance 
across the figured portion is 16 mm. x about 5 
Figured specimens in collection of Johns Hopkins University. 
