PLATE 15 
All figures approximately natural size 
Fig. 1. Monia macroschisma (Deshayes). Longitude 61 mm. 
Bolinas. Exterior of upper, or left valve. 
Fig. 2a. Anomia peruviana d’Orbigny. Longitude 24.8 mm. Sta- 
tion 5811. Exterior of upper, or left valve. 
Fig. 2b. Anomia peruviana d’Orbigny. Longitude 24.8 mm. Sta- 
tion 5811. Interior of upper, or left valve. 
Fig. 3a. Ostrea elongata Solander. Longitude 46 mm. Station 
D 5782. Interior of left valve. 
Fig. 3b. Ostrea elongata Solander. Longitude 46 mm. Station 
D 5782. Interior of right valve. 
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