No. 186.J 



95 



Page 



Ortliis varica _ 119 



Ortlioceras clavatum 345 



" ■ ? 345 



" helderbei'gise 345 



" longicameratnm . 343 



" pauciseptiim 346 



" perstriatum 346 



" rigidum 344 



" rudis 346 



" subtextile ... 344 



" tenuiannulatum . 345 



Palcearca saifordi 27 1 



" ventrtcosa 271 



Pentamerus galeatus 257 



" littoni 262 



" pseudogaleatus _. 259 



" verneuili 260 



Pliacops liudsonicus 355 



" logani 353 



PiLEOPSIS 308 



Platyceras 309 



Platyceras agreste 338 



" arcuatum 336 



" billingsi 315 



" bisinuatum 318 



" bisulcatum 327 



" calantica ._ 328 



" clavatum . _ 337 



" curvirostrum 338 



" dilatatum .. 322 



" elongatum 335 



« " 1 var 335 



" gebhardi 312,474 



" gibbosum 323 



« incile 332 



" intermedium 321 



" lamellosum 330 



" magnificum 476 



" multisinuatum _. 319 



" newberryi 333 



" nodosum 473 



" obesum 329 



" patulum 477 



" pentalobus 319 



" perlatum 328 



" perplicatum 325 



" pileiforme 327 



" platystomum 326 



" " var. alveatum, 326 



Page 



Platyceras plicatile 325 



" plicatum 334 



" pyramidatum 336 



" reiiexum 477 



" retrorsum . _ 1 320 



" " var. abnormis, 321 



" robustum 313 



" sinuatum 314 



" spirale 331 



" subnodosum 474 



" sulcoplicatum 324 



" tenuiliratum .. 317 



" tortuosum 472 



" ? 473 



" tubseforme 332 



" tdlobatum 316 



" undulostriatmii _ . 336 



" unguifurme 322 



" unisulcatum 316 



" ventricosum, 311,475 



" (Platyostoma) callosum,478 



Platycrinus parvus 114 



" plumosus ._ 113 



" ramulosus 115 



" tentaculatus 116 



Platyostoma 299 



Platyostoma arenosa . _ 302 



" depressa 301 



" subangulata 301 



" ventricosa .. 300, 469 



Pleurotomaria labrosa 339 



Proetus protuberans . . 35 1 



PfiCTASTER 134 



Protaster forbesi 134 



Pterygotus 398 



Renssel^ria 454 



Rensseleeria sequiradiata 255 



" cumberlandise 464 



" elliptica 256 



" intermedia 463 



" Isevis 256 



" marylandica 461 



" mutabilis 254 



" ovalis 458 



" ovoides 456 



" suessjma _ 459 



Rhynchonella abrupta 228 



" acutiplicata 232 



" sequivalvis 224 



