210 



ANNALS NEW YORK ACADEMY OF SCIENCES 



Spirifer mucronatus mut. profundus — Continued 







Adult 



Stage 







Neanic 



Stage 





Number 



Width 



Height 



Index 



; reverse • 



Index 



Width 



Height 

 ( 



Index 

 reverse) 



Index 



1023... 



. 22mm. 



18mm. 



.818 



1.22 



22mm. 



12mm. 



.545 



1.83 



1024... 



26 



18 



.692 



1.44 



26 



11 



.426 



2.. 36 



1025 . . . 



22 



21 



.9.54 



1.04 



22 



10 



.4.54 



2.20 



1026... 



24 



15 



.625 



1.60 



24 



9 



.375 



2.66 



1027... 



28.5 



16 



..561 



1.78 



28.5 



9.5 



.333 



3.00 



1028... 



22 



16.5 



.7.50 



1.33 



22 



10 



.454 



2.20 



1029... 



25 



18 



.720 



1.38 



25 



11 



.440 



2.27 



1030... 



18 



15 



.833 



1.20 



IS 



10.5 



.583 



1.71 



1035... 



22 



16 



.727 



1.37 



22 



10 



.454 



2.20 



1036... 



23 



13 



.565 



1.76 



23 



8 



.347 



2.87 



1037... 



18 



12 



.666 



1.50 



18 



7 



.389 



2.59 



1038... 



28 



16.5 



.589 



1.69 



28 



10.5 



.375 



2.66 



1039... 



18 



10 



.555 



1.80 



18 



7.5 



.416 



2.40 



1040... 



20 



15 



.750 



1.33 



20 



8.5 



.425 



1.35 



1041... 



19.5 



12.5 



.641 



1.56 



19.5 



9.5 



.487 



2.05 



1042.... 



24.5 



19 



.775 



1.28 



24.5 



12 



.489 



2.04 



1043... 



20 



13.5 



.675 



1.48 



20 



10 



.500 



2.00 



1044... 



21 



16 



.761 



1.31 



21 



10.5 



.500 



2.00 



1045.... 



28 



16 



..571 



1.75 



28 



11 



.392 



2.54 



1046.... 



25 



15 



.600 



1.66 



25 



12 



.480 



2.09 



1047.... 



28 



14 



..500 



2.00 



28 



9 



.321 



3.11 



1048.... 



23 



16.5 



.717 



1.39 



23 



10.5 



.456 



2.19 



1049.... 



21 



13 



.619 



1.61 



21 



9 



.428 



2.66 



10.50 



18 



14.5 



. 805 



1.24 



18 



9 



.500 



2.00 



1051.... 



19 



13 



.684 



1.46 



19 



8 



.421 



2.37 



1052.... 



18 



12 



.666 



1.50 



IS 



8.5 



.461 



2.11 



1053.... 



18 



13 



.611 



1.38 



18 



10 



.555 



1.80 



1054.... 



20.5 



12.5 



.609 



1.62 



20.5 



9 



.439 



2.27 



1055 



.... 



.... 



.... 



.... 



.... 



.... 











1056.... 



22 



18 



.555 



1.80 



22 



10.5 



.477 



2.07 



1057... 



23 



16.5 



.717 



1.39 



23 



12 



.521 



1.91 



105S... 



.... 



.... 



.... 



.... 



.... 







.... 





1U59 . . . 



35 



14 



.400 



2.50 



35 



11 



.314 



3.18 



1060 . . . 



27 



16 



..592 



1.68 



27 



10.5 



.388 



2.57 



1061... 



25 



16 



.640 



1.56 



25 



10.5 



.420 



2.38 



1062... 



20.5 



14 



.682 



1.46 



20.5 



9 



.439 



2.27 



1063... 



31 



IS 



.580 



1.72 



31 



10.5 



.338 



2.95 



1064... 



24 



16 



.666 



1.50 



24 



11 



.458 



2.17 



1065... 



. 24 



15.5 



.645 



1.54 



24 



1 



.291 



3.42 



1066... 



. 29 



15.5 



..534 



1.87 



29 



9 



.310 



3.22 



1067... 



. 26 



13.5 



.519 



1.92 



26 



9 



.346 



2.88 



1068... 



. 25 



21 



.840 



1.19 



25 



11 



.440 



2.27 



1069... 



. 23 



12.5 



.543 



1.84 



23 



8 



.347 



2. 87 



1070... 



. 28 



14.5 



.517 



1.93 



28 



11 



..392 



2.54 



1071... 



. 26.5 



IS 



.679 



1.47 



26.5 



11 



.415 



2.40 



