— 40 — 



stewards Point. 



Bodega Bay, outside and along northeast side, sparingly. 



[Duxberry Reef]. 



Scotty Creek, near Bodega, 3 miles north. 



Between the Estero del Americano and Estero San Antonio. 



Tomales Bay. 



Point Reyes, inside southern point. 



The distribution of Paphia is not, as may be seen from the above 

 remarks, continuous along any portion of the coast, but the beds are 

 of small extent and widely separated. It reaches its greatest abund- 

 ance in bays such as Humboldt, Bodega and especially Tomales. On the 

 outer coast it exists in very considerable numbers in the beach between 

 Crescent City and Point George, more so toward the point. The 

 remainder of the outer beds are of less importance. In Humboldt 

 Bay the species approaches the Washington clam {Saxidomus) in 

 possil)le commercial value and is found for the most part coextensive 

 with it in South Humboldt Bay, but also to a lesser degree in North 

 Humlwldt Bay. Though used locally it was not found in the markets 

 (F. W. W., 1919). In Bodega Bay it is dug along the northeastern 

 side and is of sufficient importance to warrant digging commercially 

 for shipment to San Francisco. 



In Tomales Bay the rock cockle is found in the greatest abundance 

 and here they are more important commercially than in any other bay 

 on the California coast. The bay is long and narrow and the beaches, 

 not of great width, are composed of boulders, gravel and sand and in 

 some places mud, extending doubtless below low tide level. The clams 

 are found on all these beaches which are gravelly or firm enough to 

 offer suitable ground. On the northern side of the bay the best beds 

 are between Marshals and the Arroya San Antonio, on the southern side 

 they lie opposite these and for two miles towards the head of the bay 

 from Inverness, although digging seems to be carried on elsewhere as 

 well. There are also a few to be found just north of the entrance of 

 the bay. The major part of the supply for the San Francisco market 

 M^as drawn from Tomales Bay at the time of this survey (W. F. T., 

 1910 ; the same held true of the market in the fall of 1919. F. W. W.) . 



In California south of San Francisco PapJda is also a widely 

 distributed reef and gravel bar species but is found in commercial 

 quantities only at a few points. It was collected at the following 

 points: about the Montara Light, in Elkhorn Slough (Monterey Bay), 

 in numerous very limited beds between Monterey and Point Sur, 

 between Piedras Blancas and San Simeon, between Cambria and 

 Cayucos, the "Pecho" coast between Point Buehon and Point San 

 Luis, along the southern end of the Point Sal reefs north of Casmalia, 

 Purisima Point and on the numerous boulder and gravel bars along the 

 entire mainland coast of the Santa Barbara Channel from Point 

 Conception to middle Ventura County. They are present in the mud 

 flats of ]\Iorro Bay, though apparently not abundant, and in El 

 p]stero near Carpinteria. At both Playa del Rey and Anaheim Slough 

 they are dug for the market (1919, F. W. W.) as well as used by 

 local residents and campers. The rock cockle was also found, though 

 less abundantly, in False Bay and San Diego. In these southern points 



