Siphons, long and narrow 6 29 



of mollusks 984 



My a 1261 



, short 286, 1845 



/ withdraw 101, 642 



Sirolpidium 281, 452, 455, 723, 1906 



Site, alternative 146 



, less accessible 817 



Situation, experimental 477 



Size 51, 53, 181, 184, 291, 311, 426, 558 



-age relationship 1096, 1097 



and relative age, relate 1071 



shape of metamorphosing larvae 1118 



at planting 133, 268 



categories 1314 



classes, divided into 474 



, correlates with body 855 



difference 99 



distribution 60, 673, 1071 



/ bimodal 189, 190 



frequency 90, 713, 714, 793 



groups 245 



, increased 538 



, intermediate 1181 



limit, minimum 169 3 



limit were raised, if 1693 



, limiting 790 



limits 400 



/ maximum 54, 154, 1782 



, mean 267 



of eggs 189, 190 



larvae 275, 1041, 1303 



particles 944 



quahogs eaten 501 



resource 540 



virus 563 



_ range 292, 502, 507, 536, 679, 1164, 1359, 1482, 1916, 1927 

 , necks 382 



related to egg production 189 



pollution 6 8 



selection 673 

 -selective mortalities 49 8 

 _, uniform 133 



variation 331 



Sizes 504, 691, 1238 



, asymptotic 1097 



less at lower salinities 964 



809 



