MOOK, VARIATION IN SPIRIFER MUCRONATUS 



213 



Spirifer mucronatus mut. attenuatiis 







Adult 



Stage 







Neanic 



Stage 





Number 



Width 



Height 



Index 

 (reverse* 



Index 



Width 



Height 



( 



Index 

 reverse ) 



Index 



1301..., 







.... 



.... 



.... 



.... 



.... 



.... 



.... 



1302.... 



, 26mm. 



15mm. 



.576 



1.73 



26mm. 



8. 5mm... 326 



3.05 



1305.... 



, 25 



15.5 



.620 



1.61 



25 



10 



.400 



2.50 



1306.... 



. 42.5 



15.5 



.364 



2.74 



42.5 



10.5 



,247 



4.04 



1307.... 



, 31 



13 



.419 



2.38 



31 



9 



.290 



3.44 



1.308 . . . . 



24 



17.5 



.725 



1.37 



24 



10 



.416 



2.40 



1309 . . . . 



30 



15 



.500 



2.00 



30 



10 



.333 



3.00 



1310.... 



28 



15 



.535 



1.86 



28 



10.5 



.375 



2.66 



1311.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



1312.... 



28 



14 



.500 



2.00 



28 



10 



.357 



2.80 



1313 



24 



14 



.583 



1.71 



24 



9 



.375 



2.66 



1314 



28 



14.5 



.517 



1.93 



28 



10.5 



.375 



2.66 



1315 



19 



12 



.6.31 



1.58 



19 



8 



.421 



2. .37 



1316.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



1.317.... 



47 



14 



.295 



3.35 



47 



10 



.212 



4.70 



1318.... 



30 



13 



.433 



2.30 



30 



10 



.333 



3.00 



1319 . . . . 



26.5 



12.5 



.471 



2.12 



26.5 



9 



.339 



2.94 



1320.... 



30 



15 



.500 



2.00 



30 



9.5 



.316 



3.15 



1321.... 



30 



8 



.266 



3.75 



30 



6.5 



.216 



4.61 



1.322 



23.5 



11 



.468 



2.13 



23.5 



8 



.340 



2.93 



1323.... 



19 



14 



.7.36 



1.35 



19 



8.5 



.447 



2.2.3 



1324 



20.5 



13.5 



.658 



1.51 



20.5 



8.5 



.414 



2.41 



1325.... 



29 



15 



.517 



1.93 



29 



11 



..379 



2.63 



1326.... 



35.5 



15 



.422 



2.. 36 



.35.5 



9.5 



.267 



3.73 



1327.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



1328.... 



26 



12 



.461 



2.16 



26 



8.5 



.326 



3.05 



1329.... 



32 



12.5 



.390 



2.. 56 



32 



9.5 



.296 



3.36 



1330.... 



25 . 5 



12 



.470 



2.12 



25.5 



7.5 



.294 



3.40 



1331.... 



29 



14.5 



.500 



2.00 



29 



10 



..344 



2.90 



1332.... 



26 



12 



.461 



2.16 



26 



9 



.2.30 



4.. 33 



13.33.... 



23 



9.5 



.413 



2.42 



23 



7 



..304 



3.28 



1334.... 



28 



14 



.500 



2.00 



28 



8 



.283 



3.50 



1335.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



.... 



1336.... 



26 



11 



.407 



2.36 



26 



7 



.269 



3.71 



1337.... 



.... 



.... 



• • > • 



• • • • 



• • • • 



• • • o 



• • • • 



• • • • 



1338.... 



25 



12 



.480 



2.08 



25 



8.5 



..340 



2.94 



1339.... 



37 



14.5 



.391 



2.. 55 



37 



11 



.297 



3.36 



1343 .... 



34 



16 



.470 



2.12 



34 



12 



.358 



2.83 



1.344 



23 



13 



.565 



1.76 



23 



7 



.304 



3.28 



1345.... 



20.5 



12.5 



.609 



1.64 



20.5 



8 



.390 



2.56 



1346.... 



30 



11.5 



.383 



2.60 



30 



8.5 



.283 



3.52 



1347.... 



24 



13.5 



.562 



1.77 



24 



10 



.416 



2.40 



1348.... 



29 



11.5 



.396 



2.52 



29 



7.5 



.2.58 



3.86 



1349.... 



















