Erocee dines of 
wae, nited States 
National Museum 
SMITHSONIAN INSTITUTION + WASHINGTON, D.C. 
Volume 120 1967 Number 3554 
A NEW SPECIES OF BURROWING 
ACONTIATE ANEMONE FROM CALIFORNIA 
(ISOPHELLITDAE: FLOSMARIS) 
By CapEt Hanp and Raven BusHNeELv! 
In a series of papers, Hand (1955, 1955a, 1956, 1958) described 
certain of the sea anemones of central California. The new species 
herein considered adds to that list. 
The first specimens were collected in 1949 from intertidal mud flats 
of San Francisco Bay adjacent to Bay Farm Island, Alameda County, 
California. The flat is composed of fairly firm sand in which is mixed 
considerable mud and accumulated mollusk shells in various stages of 
disintegration. 
The anemones occur with the base attached to fair sized remains of 
clam shell, small stones or even pieces of wood some 30-46 cm. beneath 
the surface. The oral end extends to the surface. Thus, when 
located in their original habitat, most of the 70 animals so far found, 
were about 30-46 cm. in length; however, they are only about 6-7 mm. 
in diameter except at the disc and base. The base may be up to 2.5 
cm. in diameter and well covered with bits of clam shell and much 
sand, which remain adhering when the animal is dug from its burrow. 
Much care is needed in digging this species from its natural position 
as it is very easy to misjudge the depth at which the base is located, 
1 Both authors: Department of Zoology, University of California, Berkeley, 
Calif. 
al 
