1392 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



reinwardtii Clavaeblastus, Pentatrema- 

 tites, Pentremites, Troostocrinus. 



remipes Eurypterus. 



remotiseptum Actinoceras, Hormoceras, 

 Ormoceras. 



remotus (a) Clonograptus, Dichograp- 

 tus, Discosorus, Grammysia. 



remus Orthoceras. 



reniformis (e) Beyrichia logani, Primi- 

 tia logani, Rhombodictyon. 



rensselaerica Eurychilina subradiata . 



repens Alveolites, Aulopora, Millepora, 

 Orthoceras, Vinella. 



repertus (m) Spirifer (Eospirifer), Try- 

 blidium. 



r e splenden s Leperditia . 



reticularis Anomia, Atrypa, Crania, Te- 

 rebratula, Trematis. 



reticulatus(a, um) Actinopteria, Anoma- 

 loides, Anomalospongia, Chasmatopora, 

 Cladopora, Cyathodictya, Cyathophy- 

 cus, Dictyograptus, Dictyonella, Dic- 

 tyostroma, Eichwalida, Eschara, Eury- 

 chilina, Favistella, Intricaria, Lep- 

 tsena, Orbitolites, Orbituloides, Phyllo- 

 porina, Receptaculites, Rhynchonella, 

 Strophomena, Subretopora, Tretaspis. 



retiformis Dictyonema, Gorgonia, Sy- 

 ringopora. 



retractilis Dendrocrinus . 



retroflexa Clitambonites (Gonambonites) 

 plana, Gonambonites plana. 



retrorsus (a, um) Ambonychia, Bysso- 

 nychia, Calymene meeki, Ctenodonta, 

 Cyrtolites, Dinorthis, Metoptoma, Nc- 

 matopora, Orthis, Plaesiomys, Trocho- 

 nema, Tryblidium. 



reversata Orthis biforata, Platystrophia, 

 Streptaster. 



reversus (a, um) Anastrophia, Arthro- 

 pora, Brachymerus, Crania, Cyrtoceras, 

 Holopea, Parastrophia, Pentamerus. 



revoluta Pterinea, Rhombopteria (New- 

 somella). 



rhine Hyolithes. 



rhinoceros Amphilichas. 



rhombicus (a) Chaetetes, Micropora. 



rhombiferus Cyathocrinus, Palaeocrinus. 



rhombiforme Rhombodictyon reniforme. 



rhomboidalis Conchita, Leptaena, Plec- 

 tambonites, Strophomena. 



rhomboidea (um) Avicula, Cleionychia, 

 Clionychia, Leptodesma, Modiolopsia, 

 Posidonomya, Pterinopecten. 



rhombolineare Gyroceras. 



rhynchonelliformis Orthis, Rhipidomel- 

 la, Rhipidomella uberis. 



rhyncocephalus Acidaspis. 



rhythmoides Orthoceras (Eu-orthoceras) 



richardsoni (i) Actinoceras, Arachno- 

 phyllum, Beyrichia, Canistrocrinus, 

 Clonograptus, Drepanella, Eopteria, 

 Glyptocrinus, Graptolithus, Grapto- 

 lithus (Monoprion), Holograptus, Le- 

 visia, Orthoceras, Reteocrinus, Rouvil- 

 ligraptus, Strombodes, Subulites. 



richmondensis (e) Archinacella, Bu- 

 cania, Byssonychia, Conocardium, Cor- 

 nulites, Girvanella, Hebertella alveata, 

 Homotrypa, Leptaena, Protarea, Ra- 

 phistoma, Salpingostoma, Strephoche- 

 tus, Stromatocerium, Tentaculites. 



riciniformis Lingula, Lingula (Glos- 

 eina). 



ridleyana Protorhyncha, Rhynchonella. 



rigidus (a, um) Clonograptus, Columna- 

 ria alveolata, Cyrtoceras, Dicellograp- 

 tus, Dicellograptus divaricatus, Dicho- 

 grapsus, Graptolithus, Graptolithus 

 (Monoprion), Orthoceras, Palaeasterina, 

 Petraster, Stictoporella. 



ringuebergi Nicholsonella. 



robbinsi Amphilichas, Eunema, Lichas 

 (Hoplolichas), Lichas (Platymetopus), 

 Trochonema (Eunema). 



robertsoni Eurystomitea, Lituites. 



r ob soni Tripleuroceras . 



robustus (a, um) Ambonychia, Amplex- 

 opora, Aparchites minutissimus, Atry- 

 pa, Beyrichia, Beyrichia chambersi, 

 Byssqnychia, Bythocypris, Ceratop&is 

 chambersi, Ceraurus (Sphaerocoryphe), 

 Ctenodonta nasuta, Dekayella, De- 

 kayella ulrichi, Delcayia ulrichi, Dicty- 

 onema, Eurypterus, Helicotoma planu- 

 lata, Hughmilleria socialis, Lamptero- 

 crinus, Licrophycus, Megalomphala, 

 Nereites, Nereograpsus, Pachydictya, 

 Pleurocystis, Pleurocystis squamosa, 

 Pleurocystites, Pleurocystites squa- 

 mosa, Protaxocrinus, Rhynchonella, 

 Scenella, Sphaerocoryphe, Streptelasma. 



roemerana Brachiospongia. 



roemeri Caryocrinites, Caryomanon, 

 Cyrtocrinus, Dimerocrinus, (Eospon- 

 gia), Gypidula, Melocrinus, Meristina 

 maria, Orthothetes, Schuchertella, Sie- 

 berella, Strophonella. 



