iPR,REXP.& SURVEYS 32?PAP*T.TEL A CALIFORNIA 



^AL^OMXOLOGY. PLAIE 711 



FlGi tAPES IHEZZKSIS 

 FIG 4 , c'yCLAS PEBMACRA 



FIG . 2 . DOSmiA LONGULA . 

 FIG. 5 . GLYCIMERIS ESIREIiANUS 



FIG . 3 . 



MACTRA GATIOTENSIS 

 TROCHITA COSTELIAIA 



