INDEX. 
365 
Orthis Whitfieldi, N. H. Winchell, . 
0. zonata, Dalman, 
O. (Dalmanella) arcuaria, sp. nov., 
O. (Dalmanell) superstes, sp. nov. 
O. (Plsesiomys) loricula, sp. nov., 
O. (Rhipidomella), Oweni, sp. nov., 
O. (Sehizophoria) senecta, sp. nov. 
Orthisina adscendens, Pander, 
O. anomala, d’Orbigny, 
0. cava, Barrande, 
O. crassa, Meek and Hayden, . 
0. festinata, Billings, 
O. grandaava, Billings, 
O. Missouriensis, Swallow, . 
0. occidentalis, Newberry, 
O. orientalis, Whitfield, 
O. transversa, Walcott, . 
O. Verneuili, Eichwald, 
Orthostrophia strophomenoides ,Ball, 
Orthothetes desideratus, sp. nov., 
Orthothetes pecten, Dalman, 
O. radiata, Fischer, . 
O. socialis, Fischer, 
O. subplanus, Conrad, 
O. umbraculum, von Buch, 
Patella anomala, Muller, . 
P. antiquus, Schlotheim, 
P. implicata, Sowerby, 
Paterula Bohemica, Barrande, 
Pentamerus oblongus, Hall, 
Pholidops antiqua, Schlotheim, 
P. bellula, Walcott, . 
P. calceola, sp. no.v., 
P. Cincinnaliensis, Hall, 
P. Hamiltoniaa, Hall, 
P. implicata, .... 
P. lepis, sp. nov., 
P. linguloides, Hall, . 
P. oblata, Hall, 
P. ovalis, Hall, 
P. ovata, Hall, 
P. patina, sp. nov., 
P. sp. ? 
P. squamiformis, Hall, 
P. terminal is, Hall, 
P. Trentonensis, Hall, 
Plectambonites crassa, Pander, 
P. oblonga, Pander, . 
P. ovata, Pander, 
P. planissima, Pander, 
P. testudinata, Pander, 
P. trans'versalis, Wahlenberg, 
Plicatula striatocostata, Cox, 
Polytoechia apicalis, Whitfield, 
Producta analoga, Phillips, 
P. monilifera, McCoy, 
P. rugosa, Hisiuger, 
P. truncata, Hall, 
P. ( Triplecia) monilifera, McCoy, 
Productella hystricula, Hall, 
Prc ductus sequicostatus, Hall, 
P. aequiradiatus, Shumard, 
P. alternatus, Norwood and Pratten, 
P. Altonensis, Norwood and Pratten, 
279 
316 
271 
316 
326 
326 
327 
327 
Productus Americanus, Swallow, 
arcuatus, Hall, 
asper, McChesney, 
biseriatus, Hall, 
Burlingtonensis, Hall, 
Cbesterensis, Worthen, . 
Cbristiani, de Koninck,' 
clavus, Norwood and P ratten, 
comoides, Sowerby, 
complectens, Etheridge, . 
compressus, Waagen, 
Cora, d’Orbigny, . 
costatus, Sowerby, 
dissimilis, Hall, 
ermineus, de Koninck, 
Geinitzianus, de Koninck, 
genuinus, Kutorga, 
Hallianus, Walcott, 
horridus, Sowerby, 
Lasallensis, Worthen, 
latirostratus, Howse,. 
Leonhardi, . 
Llangollensis, Davidson, 
longispinus, Sowerby, 
magnus, Meek and Worthen, 
marginicinctus, Prout, . 
Martini, Sowerby, 
mesolobus, Phillips, 
mytiloides, Waagen, . 
Nebrascensis, Owen, 
Newberryi, Hall, 
nodosus, Newberry, 
Nystianus, de Koninck, 
opuntia, Waagen, 
ovatus, Hall, 
pileiformis, Newberry, 
Prattenianus, Norwood, 
proboscideus, de Verneuil, 
punctatus, Martin, 
liogersi, Norwood and Pratten, 
scabriculus, Martin, . 
semireticulatus, Martin, 
splendens, Norwood and Pratten, 
striatus, Fischer, . 
subaculeatus, Murchison, 
sulcatus, Castelnau, 
symmetricus, McChesney, 
tenuicostatus, Hall, 
umbonillatus, Davidson, 
vittatus, Hall, 
Wortheni, Hall, 
(Daviesiella) Llangollensis, Davidson, 
(Etheridgina) complectens, Etheridge, 
(Proboscidella) proboscideus, de Verm 
Pronites adscendens, Pander, 
humilis, Pander, . 
oblonga, Pander, 
(Clitambonites) adscendens, Pander, 
Rafinesquina alternata, Conrad, 
R. expansa, Sowerby, 
Richthofenia Lawrenciana, de Koninck, 
Rhinobolus Davidsoni, sp. nov., 
R. Galtensis, Billings, 
Bhynchonella angulata, Geinitz, 
