168 



Annals of the Carnegie Museum. 



Table IV. 



Actual Measurements of Shells Used in a Comparison 

 Fusconaja flava parvula. Lake Erie. 



Fusconaja flava. Comparison Upper Ohio Drainage with Lake Erie. 



Allegheny tributaries (36-38) . . 



Lake Erie (98, 99, 102) 



Allegheny River (13-14) 



Lake Erie (98, 99, 102) 



Lake Erie (102-119) 



Monongahela tributaries (44- 



49) 



Ohio tributaries (54) 



Presque Isle (102-119) 



27 

 27 

 13 

 13 

 16 



16 



4481 



544 



4650 



560 



551 



•7663 .7175 

 .8492 .781 



.7678 



.788 



.8827 



4754 .7969 

 4359 ^7569 

 539 ■8542 



•7369 



.796 



•783 



.7362 

 ■7354 

 •765 



.2740 



• 2318 

 .2712 

 .1927 

 •2439 



•2793 



• 2563 

 -2755 



.4901 



•529 

 .4992 

 .522 

 •542 



.4879 

 ■5247 

 .528 



.3150I .1175 

 .2154' .1140 

 •2354 -0958 

 .19581 .1007 

 .2396J .1121 



.2254I .1084 

 .2209 .1036 

 .2424' .1185 



Comparison Amblema plicata. Lake Erie Drainage. 



La Plaisance Bay, Lake Erie . . 5 



Sandusky Bav, Cedar Point . . . , 5 



Ibid 6 



Presque Isle Bay (all localities) . | 6 



.462 

 .420 

 .427 

 •444 



.7295 .824 .1700 

 .7656 .809 ! .1704 

 .768 .805 [.1784 



.7569, .821 ! .1710 



.602 

 .603 

 •596 



•577 



.1738 .1497 



.194 .1080 



.1931 .1077 



.1863 .1221 



Amblema costata. Comparison Upper Ohio Drainage with Lake Erie. 



La Plaisance Bay, Cedar Point 



(98-99) 



Presque Isle (101-120) 



Presque Isle (101-120) 



Allegheny River (12-17) 



Presque Isle (101-120) 



Allegheny tributaries (22, 23, 



26, 31-33) 



Presque Isle (101-120) 



Beaver tributaries (60-78) . . . . 



Presque Isle (101-120) 



Beaver River (79) 



15 

 15 

 15 



15 

 16 

 16 



7 

 7 



444 



426 



436 



4391 



436 



3908 



435 

 408 



444 

 459 



•757 



.762 



.7689 



.7688 



.7689 



• 7777 

 .7719 

 ■7756 



• 7613 

 .7667 



.829 

 .816 

 .818 

 .810 



.760 

 .819 

 .760 

 .818 



.741 



•1793 

 .1823 

 .1787 

 .1812 

 .1787 



•595 ! •1834 



.564 I .1767 



•565 ! ^1784 



.607 .1885 



.565 ■ .1784 



•1173 

 •1393 

 •1373 

 •1495 

 •1373 



•2364 -579 I ^2032 .1506 



1758, .569 I ^1774 ^1385 



■2332J ^587 ; •18941 ^1504 



.1820 .566 I .1830I .1348 



.256 I .552 I .2119I .1647 



Comparison Pleurobem.a obliquum pauperculum, Lake Erie Drainage. 



La Plaisance Bay . 

 Big Bend 



.468 .758 

 .477 .662 



.897 

 •857 



• 103 

 -1945 



.619 i .1262 .0964 

 •573 1.1828, .1175 



