1396 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



similis (e) Arabellites, Archinacella, 

 Bellerophon, Conradella, Dendrocri- 

 nus, Didymograptus, Eridotrypa, Eu- 

 nema, Graptolithus, Helicotoma, Holo- 

 pea, Homotrypa, Metoptoma, Modio- 

 lopsis, Phragmolites, Phyllograptus, 

 Platystrophia, Stictopora, Stictotrypa, 

 Tellinomya, Trochonema (Eunema), 

 Tryblidium. 



simillimus Bathyurus . 



simplex Archinacella, Arthropora, Azy- 

 gograptus, Beyrichia, Cyrtoceras, De- 

 kayella prsenuntia, Dendrograptus, Di- 

 cranella, Ectenocrinus (Heterocrinus), 

 Eunicites, Fucoides, Gypidula, Hetero- 

 crinus, Heterocrinites, Ichthyocrinus, 

 Lecanocrinus, Mastigograptus, Metop- 

 toma, Octonaria, Onchometopue, Pa- 

 laeaster, Palseophycus, Protoscolex, 

 Rhynchotreta, Spirifer (Delthyris) cris- 

 pis, Spirifer (Reticularia) crispus, Tetra- 

 della, Tetradella quadrilirata, Thlip- 

 eura, Trematospira, Tryblidium. 



simpsoni Endoceraa, Narthecoceras, Or- 

 thoceras. 



simulans Crepipora, Cyclonema, Eu- 

 rymyella, Orthonota, Primitia, Primi- 

 tiella. 



simulator Illsenus, Orthoceras. 



simulatrix Archinacella, Batostomella, 

 Bucania, Ctenodonta, Eridotrypa, Hor- 

 motoma, Modiolopsis, Monticulipora, 

 Murchisonia-, Prasopora. 



sinemurus Strombodes. 



singularis (e) Bucania, Callopora, De- 

 kayella, Heterotrypa, Leioclema, Mon- 

 ticulipora, Trematopora. 



sinistra Polygyrata. 



sinosus Meristina profunda. 



sinuatus (a, um) Anatina, Cypricardi- 

 tes, Cyrtoceras, Cyrtolites, Delthyris, 

 Euomphalus, Hebertella, Hebertella 

 occidentalis, Hemipronites, Ilionia, 

 Leperditia, Modiolopsis, Orthis, Orthis 

 occidentalis, Orthodesma, Orthothetes 

 deformis, Psiloconcha, Retzia, Rhyn- 

 chospira, Rhytimya, Schuchertella, 

 Straparollus, Streptorhynchus, Stro- 

 phomena. 



sinuosus (a) Ctenodonta, Cyrtolites, Nu- 

 cula. 



siplio Acrotreta. 



siphonatus Glyptocrinus. 



skiffi Stephanocrinus. 



smithi Bathyurus, Dalmanella, Dicello- 

 graptus, Haploconus, Orthis (Dalma- 

 nella), Porocrinus. 



smocki Kloedenia. 



sobrina Homeospira, Retzia. 



socialis (e) Crania, Ctenodonta, Cythe- 

 rodon, Dictyonema, Graptopora, Hugh- 

 milleria, Orthoceras, Orthoceras (Gei- 

 sonoceras), Tellinomya, Tellinomya 

 (Nucula), Zaphrentis. 



sol Cheirurus, Heliomera. 



sola Orthis, Rhipidomella. 



solarioides Pleurotomaria, Pycnompha- 

 lus. 



solidissima Fistulipora, Lioclemella. 



solidus (a) Crepipora, Eridotrypa, Eu- 

 rychilina, Homotrypa, Lecanocrinus, 

 Trematopora. 



solitarius (a, um) Athyris, Bathyurus, 

 Bellerophon, Ceraurus, Cheirurus, Cho- 

 nophyllum, Cyathophyllum, Cyrto- 

 donta, Discina, Heterotrypa, Lloydia, 

 Whitfieldella. 



solivaga Hyalostelia. 



solutus (a) Loxoplocus, Murchisonia. 



sordidus (a, um) ^Atrypa, Cycloco2lia, 

 Encuclodema, Leptella, Maclureu, Ma- 

 clurites, Ophileta, Orthis, Orthoceras, 

 Plectorthis, Rhynchonella, Straparol- 

 lus. 



s oror cula Lophospira, Murchisonia . 



southwelli Ascoceras. 



sowteri Mod iolopsis. 



spangleri Holocystites. 



spania Orthis flabellites. 



sparsiplica Cyclospira. 



sparsus (a, um) Arenicolites, Diplo- 

 clema, Heliolites, Trematopora. 



spaskii Cyclocrinites, Cyclocrinus. 



spatiosa Crepipora. 



speciosus (a, um) Actinocrinus, Gonio- 

 phora, Goniophorus, Gyronema, Helio- 

 lites, Lyellia, Maclurea, Maclurites, 

 Orthonota, Palseaster, Palseasterina, 

 Periechocrinus, Petraster, Promopalse- 

 aster, Propora, Ptychaspis, Saccocri- 

 nus, Whitfieldella. 



spectabilis Ctenopyge, Leptoplastus. 



spenceri Dictyonema. 



sphaericus Holocystites . 



spheerion Leptotrypa, Paleachara, Pa- 

 leschara (Chsetetes). 



