UNIVERSITY OF CALIFORNIA PUBLICATIONS 
ZOOLOGY 
Vol. 2, No. 1, pp. 1-43. December 21, 1904 
CONTRIBUTIONS FROM THE LABORATORY 
OF THE 
MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO. 
THE HYDROIDS OF THE SAN DIEGO 
REGION. 
BY 
HARRY BEAL TORREY. 
The San Diego Region, as here defined, extends along the 
coast from LaJolla, ten miles north of Pt. Loma, to the Coronado 
Is., fifteen miles south of the same point. In climate, topography 
and faunal characters, it is In many respects similar to the 
region about San Pedro, Cal., which hes some ninety miles to the 
northwest. The hydroids about San Pedro have been considered . 
in a former paper (:02). The present work is concerned only 
with the local hydroids,t of which there are 42 known species, 
8 being new: and all are represented in the collections of the 
University of California or the Marine Biological -Association 
of San Diego. The accompanying table will show their recog- 
nized distribution. 
No attempt has been made to give complete specific synony- 
mies. The plan adopted gives (1) the original name of the spe- 
cies, (2) the permanent name if some change has been necessi- 
tated, and (3) all synonyms in papers dealing with Pacific Coast 
species. 
1 With the single exception of S. pedrensis. 
