208 



ANNALS NEW YORK ACADEMY OF SCIENCES 





Spirifer mucronatus 



mut. p) 



ofundus — 



Continued 











Adult Stage 



A 







Xeanic 



A 



Stage 





Xuml>er 



Width 



Height 



Index 



(reverse) 



Index 



Width 



Height 



(1 



Index 



reverse) 



Index 



926.... 



21mm. 



13mm. 



.619 



1.61 



21mm, 



8mm. 



.380 



2.62 



927.... 



25 



13 



..520 



1.92 



25 



8 



.320 



3.12 



928.... 



19 



15 



.673 



1.26 



19 



9 



.421 



2.11 



929.... 



27 



20 



.740 



1.35 



27 



10 



.370 



2.70 



930.... 



17.5 



15 



.857 



1.16 



17.5 



9 



.514 



1.94 



931.... 



17 



14 



.823 



1.21 



17 



7 



.411 



2.42 



932.... 



19 



15.5 



.815 



1.22 



19 



8.5 



.447 



2.23 



933.... 



, 23 



12.5 



.543 



1.84 



23 



8.5 



.369 



2.70 



934.... 



21 



15 



.714 



1.40 



21 



8 



.352 



2.12 



935 . . . . 



30 



20 



.666 



1.50 



30 



10.5 



.350 



2.85 



936.... 



, 24 



10.5 



.479 



2.28 



24 



8 



.333 



3.00 



937.... 



. 35 



14.5 



.414 



2.51 



35 



8 



.228 



4.37 



938.... 



, 18 



13 



.722 



1.38 



18 



7.5 



.416 



2.40 



939 . . . , 



. 20 



14.5 



.725 



1..37 



20 



8.5 



.425 



2.35 



940..., 



. 18 



11.5 



.6.38 



1.56 



18 



7 



.388 



2.57 



941..., 



. 24 



14 



.583 



1.71 



24 



7 



.291 



3.42 



942 .. . 



. 24 



14.5 



.604 



1.64 



24 



9 



.375 



2.66 



943... 



. 22 



13 



.590 



1.69 



22 



7 



.318 



3.14 



944... 



. 18 



12 



.666 



1.50 



18 



6.5 



.361 



2.76 



945... 



. 15 



12 



.800 



1.25 



15 



7.5 



.500 



2.00 



946... 



. 21 



14 



.666 



1.50 



21 



8 



.380 



2.12 



947... 



. 27 



19.5 



.722 



1.37 



27 



11.5 



.425 



2.34 



948... 



. 21.5 



14 



.651 



1.53 



21.5 



8 



.372 



2.68 



949 .. . 



. 19 



12 



.631 



1.58 



19 



8 



.421 



2.37 



950... 



. 20 



12 



.600 



1.66 



20 



7.5 



.375 



2.66 



951... 



. 16 



10 



.625 



1.60 



16 



7.5 



.468 



2.13 



952... 



. 22 



17 



.772 



1.29 



22 



10.5 



.477 



2.09 



953... 



. 18 



12 



.666 



1.50 



18 



8 



.444 



2.25 



954... 



. 19 



14.5 



.763 



1.31 



19 



9.5 



.500 



2.00 



955 . . . 



. 18.5 



15 



.818 



1.23 



18.5 



8.5 



.4.59 



2.17 



956... 



. 21 



15 



.714 



1.40 



21 



9 



.428 



2.33 



957... 



. 22.5 



16.5 



.777 



1.36 



22.5 



12 



.533 



1.87 



958... 



. 21 



16 



.761 



1.31 



21 



9 



.428 



2.33 



959... 



. 19 



15.5 



.815 



1.22 



19 



9 



.421 



2.11 



960... 



• • > • • 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



961... 



. 18 



15 



.833 



1.20 



18 



10 



.555 



l.SO 



962 .. . 



. 25 



16 



.640 



1..56 



25 



12 



.480 



2.08 



963... 



...» 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



964... 



. 22 



12 



.545 



1.83 



22 



8.5 



.386 



2.58 



965... 



. 21 



14 



.666 



1.50 



21 



9 



.428 



2.33 



966. . . 



. 21.5 



13 



.604 



1.65 



21.5 



9 



.418 



2.38 



967... 



. 18 



13 



.722 



1.3S 



18 



9.5 



.527 



1.89 



968... 



. 18.5 



10.5 



.567 



1.76 



18.5 



8 



.432 



2.. 31 



969... 



. 21 



14 



.666 



1.50 



21 



10.5 



.500 



2.00 



973.... 19 



12 



.631 



1.58 



19 



i .D 



.394 



J. . Do 



