@XxXXvVill 
galenensis, 759%. 
girardeauensis, 759. 
Cypre lla, 632. 
Cypricardella, 501, 485. 
Cypricardinia, 486. 
Cypricardiniide, 486. 
Cypricardites, 535, 484, 486, 534, 536, 539, 561, 565, 
573, 577. 
breviuscula, 535. 
canadensis, 535. 
carinata, 565. 
cing ulata, 545. 
curtis, 536. 
ganti, 535. 
germanus, 547. 
glabella, 543. 
grandis, 547. 
hainesi, 535, 
haynianus, 557, 535. 
hindi, 535. 
huronensis, 535, 
luculentus, 547, 549. 
megambonus, 570, 535. 
minnesotensis, 543. 
modestus, 627, 625, 
nanus, 558, 
niota, 560. 
obliqua, 540, 535, 
obtusa, 535. 
obtusifrons, 554. 
oviformis, 544. 
plebeia, 535. 
quadrangularis, 566, 535, 
rectirostris, 535. 
rotundatus, 552, 535, 553, 560. 
rugosa, 535. 
saffordi, 535. 
sardesoni, 555. 
spinifera, 535. 
sterlingensis, 535, 567. 
subangulata, 535. 
subcarinata, 535, 
subspatulata, 535. 
tenellus, 546. 
triangularis, 557. 
ventricosus, 588, 585, 539, 560, 573. 
vicinus, 554. 
winchelli, 535, 
wortheni, 561. 
Cypridz, 686, 629, 631, 632, 690. 
Cypridella, 632. 
Cypridina, 632, 631, 633, 688. 
minuta, 688. 
Cypridinella, 632. 
Cyprinids, 632, 631. 
Cyprosina, 632. 
Cyprosis, 632. 
Cyrenide, 608. 
Cyrtina, 724. 
Cyrtoceras, $03, 762, 764, 766, 774, 776, 796, 799. 
billingsi, S06, 805, 812. 
camurum, 805, 808, 812. 
corniculum, 809, 812. 
featherstonhaughi, $07, 812. 
THE PALEONTOLOGY OF MINNESOTA. 
hallianum, 805, 806, 812. 
houghtoni, $07, 812. 
lamellosum, 805, 806. 
minneapolis, SOS, 812. 
neleus, SO4, 812. 
norwoodi, $O9, 812. 
scofieldi, 810, 812. 
shumardi, $10, 812. 
Cyrtoceratide, 803. 
Cyrtocerina, 774, 812. 
exiguum, 798. 
manitobense, 799. 
mercurius, 774. 
planodorsatum, 792. 
schoolcrafti, 774, 812. 
typica, 774. 
Cyrtodonta, 534, 486, 504, 506, 521, 533-536, 539, 
541, 544, 546, 549, 550, 556, 560, 561, 563-566, 571, 
573, 574. 
acutumbona, 565. 
affinis, 540, 513, 541, 564. 
var. fillmorensis, 540. 
ampla, 538. 
billingsi, 538, 539, 543. 
breviuscula, 535. 
canadensis, 534, 535, 537, 546. 
carinata, 540. 
cingulata, 645, 542, 544, 546, 556. 
cordiformis, 577. 
dictza, 546. 
emma, 619. 
ganti, 521*, 
germana, 547*, 543, 548, 549. 
gibbera, 542. 
glabella, 543, 538, 539, 544, 545, 560, 561. 
grandis, 547%, 543, 546-549. 
var. germana, 549, 546, 548. 
intermedia, 549, 547*. 
luculenta, 549, 546, 567. 
halli, 541. 
hayniana, 557, 559. 
huronensis, 535, 537-539, 573. 
janesvillensis, 537, 538, 574. 
obesa, 542, 
obliqua, 540, 535, 538, 539. 
obtusa, 535. 
oviformis, 544. 
parva, 541. 
persimilis, 544, 539, 541, 546, 561. 
primigenia, 546. - 
rotulata, 541, 542, 544, 546. 
rugosus, 534, 535. 
saffordi, 545, 535, 549. 
sigmoidea, 565. 
spinifera, 535. 
subangulata, 535, 
subcarinata, 540, 535, 574. 
subovata, 536, 505, 538, 539. 
subspatulata, 535. 
tenella, 546, 544, 547, 549. 
winchelli, 521*. 
Cyrtodontide, 583, 486, 502, 521, 534, 557. 
Cyrtolites, 858, 842, 845, 846, 847, 851, 859, 863, 866, 
867, 897, 904, 905, 912, 918, 926. 
