@ — ¥ a . . 
7 : } 7 ; My 
- AM : a] — 
- , } wa ees 
= +s 
® : ue 
PLATE 9 
Distribution of Pinniaa franciscana (p. 263) @ and P. schmitti (p. 264) fo) in 
San Francisco Bay. 
[376] 
nami? Gumi A. 
