PLATE 26 
All figures approximately natural size 
Fig. 1. Solen sicarius Gould. Longitude of shell 70.5 mm. Sta- 
tion D5705. View of the left side, showing the foot and siphon 
extended. 
Fig. 2a. Siliqua nuttal (Conrad). Longitude 111.3 mm. Moss 
Beach, San Mateo County. Interior of right valve. 
Fig. 2b. Siliqua nuttalli (Conrad). Longitude 111.3 mm. Moss 
Beach, San Mateo County. Exterior of right valve. 
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