INDEX 



265 



Orthis — Cont. 



cxtcnsa, sec Glossurthis 

 f.isci.ita, see Schizoramma 

 tissiplica, see Schizoramma 

 flabellitcs, see Dolcrorthis 



dinorthis, see Dolcrorthis 



cuorthis, sec Dolcrorthis 



fissiplicata, see Dolcrorthis 



militaris, sec Dolcrorthis 

 flabcllulum, sec Dinorthis 



carrickensis, see Plxsiomys 

 frcchi, see Cyrtonotella 

 frcija, see Cyrtonotella 

 futilis, see Dalmanclla 

 gervillei, sec Fascicostella 

 grand is, see Valcourea 

 hcmipronitcs, sec Hcmipronites 

 highlandensis, see VVimanella 

 hippolyte, see Arch.*orthis 

 ignota, see Dalmanclla 

 inclyta, see Heterorthis 

 incurvata, see Productorthis 

 inflata, see Pl.-esiomys 

 inostrantzefi, see Hcspcrorthis 



ubjaensis, see Hcspcrorthis 



viruana, sec Hcspcrorthis 

 interplicata, sec Dolcrorthis 

 kankakensis, see AustincUa 

 keisleyensis, see Ptychopleurclla 

 keyserlingiana, see Aulacophoria 

 kuckersiana, see Cyrtonotella 

 lamellosa, see Ptychopleurclla 

 lapworthi, see Ptychopleurclla 

 lenticularis Vanuxem, see Levenea 

 lenticularis Wahlenberg, see Orusia 



atrypoides, see Orusia 



lyncioides, see Orusia 

 leonensis, see Thiemella 

 lepida, see Kayscrella 

 lewisii, see Skenidioides 

 loveni, see Isorthis 

 media, see Parmorthis 

 meeki, see Dalmanclla 

 minuscula, see Mendacella 

 moneta, see Nicolella 

 monticula, see Ptychopleurclla 

 morrowensis, see Platystrophia 

 mullochiensis, see Mendacella 

 multisecta, see DalmancUa 

 neglccta, see Isorthis 

 nettelrothi, see Dolcrorthis 

 nisis, see Schizoramma 

 occlusa, sec Isorthis 

 opercularis, sec Platyorthis 

 parvula, see Paurorthis 

 pectincUa sweencyi, sec Dinorthis sweeneyi 

 pepina, sec Billingsclla 

 personata, see Proschizophoria 

 plicata, see Hcspcrorthis 

 porcata, sec Plxsiomys 

 porrecta, see Dalmanclla 

 punctata, see Linoporclla 

 punctostriata, see Linoporella 

 pyramidalis, sec Hcspcrorthis 



Orthis — Cont. 



quadrans, sec Levenea 



radians, see Hcmipronitcs 



rcdux, sec Pionodcnia 



rigida, see Schizoramma 



rogata, see Dalmanclla 



rugiplicata, sec Ptychopleurclla 



rustica, sec Dolcrorthis 



saffordi, see Multicostclla 



sedgwicki, see Fascicostella 



scmicircularis, see Cyrtonotella 



scmiovalis, see Dinorthis 



stracheyi, sec AustincUa 



striata, see Nicolella 



striatocostatus, see Plassiomys 



subcarinata Dunbar, see Levenea 



subcarinata Hall, see Levenea 



subdivisus, see Plssiomys 



subfissicosta, see Schizoramma 



sweencyi, see Dinorthis 



tersa, see Dalmanclla 



tcstudinaria (Dalman), sec WattscUa 



testuditiaria (Hall and Clarke), see Orthis rogata 



tetragonum Roemer, see Isorthis 

 lata, see Isorthis 



thakil, see Dinorthis 



convexa, see Dinorthis 

 trifida, see Dinorthis 



tricenaria, see Hcspcrorthis 



trigeri, see Isorthis 



trigonula, see Pahlenella 



turgida, see Linoporella 



uberis, see Mendacella 



unguis, see Nicolella 



vespertilio, see Harknessella 



wisbyensis, see Parmorthis 

 Orthisina, see Clitambonites 



adscendens, see Vellamo 



complectens, see Vellamo 



concavus, see Clitambonites 



diversa, see Vellamo 



emarginata, see Vellamo 



grandseva, see Pomatotrema 



ingrica, see Apomatella 



marginata, see Estlandia 



planus altus, see Gonambonites 



pyron, see Estlandia 



schmidti, sec Clitambonites 



squamata, see Vellamo 



verneuili, see Vellamo 



wescnbergensis, see Vellamo 



volborthi, see Estlandia 

 Orthoidea, 43 

 Orthorhynchula, 26, 42 

 Orthostrophia, 33, 70 



fissistriata, see Schizoramma 

 Orthostrophiina:, 56, 58, 70 

 Orthotichia, 30, 31, 40, 140, 141, 144 

 Orthotropia, 152 

 Orusia, 38, 54, 56, 58 

 Osborn, H. F., 1 3 

 osceola (Finkelnburgia), 5 5,* 56 



corrugata (Finkelnburgia), 5 5 

 ottawaensis (Orthorhynchula), 42 



