1918] Packard: Molluscan Fauna from San Francisco Bay 207 
Murris) (Sela) tabulata (Carpenter), <.-:c-.cccc-dac:ccesecesaeeesacetpeeeentoees 343 
Bathytoma Harris and Barrows ........... 
Bathytoma carpenteriana (Gabb) th 
PIVEN OW ERS eee mts Sed rc ean cact ee esa TE 
Mampilia angulata, Carpenter, 2 2a22-<- :<racc-c2mensccnscsqessernenenvnceneananons 
(CURIE ERD) ce Soe Sas eee ot eee ee 
Conus Linnaeus .. 
Conus californicus Hinds* 
ENC EE ONG NG cect co Bee bot ner nccr SoS REEr Op ce CERT SEE EEE EE Per EE oop 
PRatareorn SMO mth OG tes seate aces ae ace cence ce co scence Saou sense dadatnvececaeanssasnes 34é 
Actaeon punctocoelatus (Carpenter) . 345 
Acteocinidae ............. 345 
Aieteocinag Gray cen. cec..-seannecosenamens we B45 
Acteocina cerealis (Gould) ...........-.----1--------; eee: nests eer 345 
Wea ee Ee a PNG in Sp Eo oe eee ee ee eect er 346 
WWrolwanlay cybindri Ga Carp On ten ar xsececcee.ceteeeent rc cnes ee ~ scr eeteenencecnavencenceae™ 346 
(CeBIT SE EY a tere Pep SEE See Seo TERS HRP OR ECE EERE Rene 
Gadinia Gray 
Gadamiasreticulata, (Sowerby) 222 cc coc ecc a -2ccn cso n en secaneena-csemeseereeen-vae 346 
TL TH EV etter Cera rele See Pe Reade ae eee een ea Seeks one RAE ana eee ore pt eRe 
15 5g pL EEN GY CO EE 2) EC a 359 
INTRODUCTION 
The United States Fisheries Steamer ‘‘Albatross’’ was commis- 
sioned in October, 1911, by the Bureau of Fisheries, to make a bio- 
logical survey of San Francisco Bay. The operations were directed 
by a board consisting of Dr. F. B. Sumner, naturalist, Professor C. A. 
Kofoid, of the University of California, and Commander G. H. Bur- 
rage, U. S. N., succeeded by Lieutenant-Commander H. B. Soule, 
U.S. N. The field work began on January 30, 1912, and continued 
until April 7, 1913, when the last dredge haul was made. 
A portion of the results of this survey dealing with the physical 
conditions within San Francisco Bay has been published in a joint 
paper by Dr. F. B. Sumner, Dr. G. D. Louderback, Mr. W. L. Schmitt, 
and Mr. BE. C. Johnston (1914). Discussions and detailed data are 
given regarding the temperature, salinity, depth of the water, and the 
character of the bottom for the various stations occupied by the 
“« Albatross.’’ These data serve as the basis for ecological studies now 
being made of the different groups of marine organisms obtained 
during the survey. 
The mollusean material obtained by the various types of dredges 
employed, and by shore collecting at a limited number of localities, 
was preserved in alcohol or formalin and shipped to the Zoological 
Laboratory of the University of California. The dredging material 
