cl 



PALEONTOLOGY OF MINNESOTA. 



celata, 663, 654. 



centralis, 652. 



ciDcinnatieasis, 655, 658. 



distant, 659. 



darsicomis, 639. 



duplicata, 654, 652, 655, 658, 659. 



elongata, 618, 659. 



var. nuda, 647, 648. 

 excavata, 659. 

 gibbera, 655. 

 glabra, 639. 

 IrastUls, ONV.ttl. 



impressa, 650. 



inaccoyii, 644. 



rnammata, 652,650. 



matutinu, 647. 



micula, 653. 



milleri, 653. 



mtnuto, 687, 647, 688. 



minutissirua, 651. 



mundula, 650, 656. 



parallela, 658. 



plans, 659. 



renulina, 650. 



sancti pauli, 652, 650, 653. 



sculptilis, 656. 



seminulum, 656. 



simplex, 656. 



trlgonalis, 652. 



tumida, 655, 652-654, 658. 



ulrichi, 647. 



umbonata, 659. 



unicornis, 649, 647. 



uphami, 651, 653. 



varlolata, 650, 652. 



whitfieldi, 647. 

 Primitlella, 647, 632, 643, 650, 688. 



constricta, 647, 648. 



flllmorensis, 649. 



llmbata, 648, 647. 



minuta, 648. 



simulans, 648. 



unicornis, 649. 

 Primitiopsls, 632, 659. 

 Prlsconoia, 486. 

 Proetus, 724, 752. 



parviusculus, 754. 



stonemani, 724. 

 Prolobella, 532, 485, 501. 



striatula, 532, 533. 



trentonensis, 532. 

 Promacrus, 486. 

 Prorhynchus, 487. 



Prosobranchiata, 930, 814, 817, 819, 84r,. 

 Proteobrancnla, 819, 818. 

 Protoconch, 764. 



Protowarthia, 867, 848, 849, 854-857, 868. 869, 873, 

 876, 914, 922, 923. 



acutillra, 848. 



bilobata, 869*, 848, 873, 875. 



cancellata, 872, 848, 868, 870, 873. 

 var. trentonensis, 872. 



cassinensis, 848. 



concinna, 874, 848. 



granistriata, 87O, 848, 871, 872, 922, H24. 



morrowensis, 848. 



obesa, 874, 848, 875. 



pervoluta, 871, 831, 848, 872, 875. 



planodorsata, 87 1 , 848, 872, 873. 



rectangularis, 868, 848, 869, 870, 872. 



subcompressa, 873, 848, 874. 

 ProtowarthiidiE, 847. 

 Prothyridffi, 487. 

 Prothyris, 487. 

 Protomya, 487. 

 Pseudomonotis, 485. 

 Pseudomelaniicla 1 , 1069. 

 Pseudosphajrexochus, 734, 73<>, 737. 



proliflcus, 738 



trentonensis, 73.1, 735*, 738. 

 Psiloconcha, 63O, 485, 501, 517, 531. 



elllptica, 530*. 



grandis, 530*. 



minnesotensis, 531. 

 Psilonychia, 485. 

 Pterinea, 483, 485, 489. 



itndata, 497. 

 Pterinopecten. 485. 

 Pteronitella, 485. 

 Pteronites, 485. 



Pteropoda. 818, 816, 817, 842, 844, 845, 857, 926, 927. 

 Pterotheca, 857, 926, 927. 

 Pterygometopus, 727, 729, 731-733. 



callicephalus, 731, 730, 732. 



eboraceus, 728, 729*, 732, 733. 



intermedius, 727, 728, 729, 730, 732. 



schmidtl, 729, 730, 731, 732. 

 Ptychodesma, 533, 486. 

 Ptychomphalus, 960. 

 Ptychopteria, 485. 

 Ptychopyge, 709, 704, 705, 710. 



ulrichi, 7O9*. 

 Pulmogastropoda, 817. 

 Pulmonata, 819, 814, 817, 845. 

 Pulmonifera, 817. 

 Pygidium, 698, 696. 

 Pyramidellidaj, 960. 

 Pyranomya, 501, 485. 

 Pyrenomo3us, 486. 

 Pyrgotrochus, 957, 949, 960. 



Raphistoraa, 940, 930, 981, 932-942, 944, 945, 992, 

 993, 1000, 1004, 1029, 1031, 1047. 

 americanum, 940. 

 calyx, 941. 

 crevierl, 941. 

 dairies!, 1035. 

 junior, 958. 



lapicida, 942, 932, 938, 940. 

 lenticulare, 995, 940, 99<i. 

 nascmi, 1004. 

 niagareintiit, 940. 

 peracutum, 94O, 934*, 941. 

 planistria, 935, 940. 



var. parvum, 940. 

 planistriata, 932. 

 prcevium, 99S. 



