1438 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Page. 



Pyritonema 1408 



Rafinesquina 1418 



Raphistoma 1421 



Raphistomina 1421 



Rastrites 1410 



Rauffella 1408 



Receptaculites 1408 



Remopleurides 1424 



Rensseleeria 1418 



Reteocrinus 1412 



Reticularia (subgenus Prosserella). 1419 



Retiograptus 1410 



Retiolites 1410 



Rhabdaria 1408 



Rhaphanocriuus 1412 



Rhinidictya 1416 



Rliiuobolus 1417 



Rhiuopora 1416 



Rhipidomella 1417 



Rhizograptus 1410 



Rhombodictyon 1408 



Rhombopteria (subgenus Newsom- 



ella) 1419 



Rhombotrypa 1416 



Rhopalonaria 1415 



Rhynchonella. ..'. 1418 



Rhynchorthoceras 1423 



Rhyncliospira 1419 



Rhynchotrema 1418 



Rhynchotreta 1418 



Rhytimya 1420 



Ribeiria 1425 



Ribeirella 1425 



Rizoceras 1423 



Romingeria 1409 



Rosenella 1409 



Rusophycus 1427 



Sabellarites 1411 



Saccocrinus 1413 



Saccospongia 1407 



Saaricknites 1411 



Saffordia 1419 



Sagenocrinus 1413 



Salpingostoma 1421 



Salterella 1422 



Saukia 1424 



Scsevogyra 1421 



Scalites 1421 



Scenella 1420 



Scenellopora i 1415 



Scenidium 1418 



Sceptropora 1416 



Schizambon 1417 



Page. 



Schizocrania 1417 



Scliizocrinus 1412 



Schizolopha 1431 



Schizophoria 1417 



Schizoramina 1417 



Schizotreta 1417 



Schmidtella 1425 



Schroederoceras 1422 



Schuchertella 1418' 



Schuchertia 1414 



Scofieldia 1425 



Scolitkus 1411 



Scyphocrinus 1412 



Sedgwickia 1419 



Seelya 1421 



Seinicoscinium 1416 



Septameroceras 1423 



Serpulites 1411 



Shumardia 1423 



Siderocrinus 1412 



Sieberella 1418 



Sigmagraptus 1410 



Sinuites 1420 



Sinuopea 1421 



Siphonocrinus 1412 



Siphonotreta 1417 



Solenomya 1419 



Solenopleura 1424 



Solenopora 1427 



Sowteria 1419 



Spatiopora 1415 



Sphaerexochus 1425 



Sphaerococcites 1427 



Sphserocoryphe 1425 



Sphaerocystit.es 1411 



Sphaerophthalmus 1424 



Sphenulium 1420 



Sphenophyeus 1427 



Sphenophyllum 1427 



Sphenothallus 1422 



Sphyradoceras 1423 



Spiiifer (subgenera Delthyris and 



Eospirifer) 1419 



Spirorbis 1411 



Spyroceras 1422 



Squaniaster 1414 



Staurocephalites 1410 



Staurocephalus 1425 



Staurograptus 1410 



Stegerhyncus 1418 



Stelidiocrinus 1412 



Steliella 1408 



Stellipora 1415 



