490 University of California Publications in Zoology [Vol.16 



Euherdmania claviformis (Ritt.) 



Merdmania claviformis, Ritter, 1903, p. 237. 

 Euherdmania claviformis, Ritter, 1904, p. 6.50. 

 Euherdmania claviformis, Hartmeyer, 1909, p. 1470. 



This is one of the abundant aseidians on the southern as well as 

 on the central and northern California coast. In the vicinity of La 

 Jolla, for example, it is found in great abundance on the under side of 

 rocks at low tide. Apparently it is confined to the littoral zone. 



On the whole the zooids are somewhat smaller in southern than in 

 northern colonies. 



