1918] Packard: Molluscan Fauna from San Francisco Bay 215 
This number of species and varieties obtained by the Survey in- 
cludes only about 65 per cent of the known mollusean fauna of these 
waters. The catalogue of species (p. 245) contains 173 species and 13 
varieties that have been collected by the Survey, or previously re- 
ported from San Francisco Bay, San Francisco County, or the Far- 
allon Islands. It is probable that the marine fauna is still larger, 
for there is a considerable number of species that are known to oceur 
both north and south of this region. The following list as compiled 
ineludes 118 such species which may be found in the vicinity of San 
Francisco. 
INCOMPLETE List oF MOLLUSCAN SPECIES WHOSE RANGES INCLUDE SAN FRANCISCO 
But Have Nor As Yet BEEN RePorRTED From THIS REGION 
Pelecypoda* 
Acharax agassizi Dall 
Acharax johnsoni Dall 
Adula ealiforniensis Philippi 
Adula diegensis Dall 
Axinopsis sericatus Carpenter 
Axinopsis virdis Dall 
Calyptogenia pacifica Dall 
Cardium californiense Deshayes 
Cardita subquadrata Carpenter 
Cooperella subdiaphana Carpenter 
Crenella columbiana Dall 
Crenella decussta Montagu 
Cummingia lamellosa Sowerby 
Cuspidaria apodenia Dall 
Cuspidaria chilensis Dall 
Dermatomya tenuiconcha Dall 
Diplodonta orbella Gould 
Entodesma inflatum Conrad 
Glyeymeris migueliana Dall 
Kellia suborbicularis Montagu 
Leda acuta Conrad 
Leda conceptionis Dall 
Leda minuta Fabricius 
Leda penderi Dall 
Lima subauriculata Montagu 
Lyonsia gouldi Dall 
Macoma calearea Gmelin 
Macoma expansa Carpenter 
Macoma incongrua Martens 
Macoma inflatula Dall 
Macoma inquinata var. arnheimi 
Dall 
* Compiled from Dall (1916a). 
Macoma quadrana Dall 
Mactra californica Conrad 
Malletia pacifica Dall 
Marcia kennerlyi (Carpenter) 
Reeve 
Martesia xylophaga C. B. Adams 
Miodontiseus prolongatus Carpenter 
Modiolus flabellatus Gould 
Musculus olivaceous Dall 
Mya intermedia Dall 
Mytilimeria nuttali Conrad 
Nueula linki Dall 
Ostrea palmula Carpenter 
Pandora bilirata Conrad 
Pandora punctatus Conrad 
Panope generosa Gould 
Panope generosa var. solida Dall 
Paphia staminea var. laciniata 
Carpenter 
Paphia staminea var. spatiosa Dall 
Pecten alaskense Dall 
Pecten hindsi var. navarchus Dall 
Pecten tillamookense Arnold 
Pecten vancouverense Whiteaves 
Phacoides annulata var. densili- 
neata Dall 
Pholadidea penita var. concame- 
rata Deshayes 
Pholadidea rostrata Valenciennes 
Psammobia californicus Conrad 
Psephidia lordi Baird 
Rochefortia tumida Carpenter 
Semele rubropicta Dall 
