SYSTEMATIC LIST. 
LOWER SILURIA N—Continued. 
271 
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Genera and species. al a B 5 Remarks. Page. 
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AH | ATE 
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GASTEROPODA. 
Bellerophon (Bucania) bidorsata Hall....)...-..|...--- U. | Trenton Group species in New York, Canada, etc..|......... 
Glib sen seadusscnsp soseenocad pooscr >S) |Eosae Like B. allegoricus White 
Strapanoiusispatiasosne tee schesecae-seae |cscees|eecee WJea eetciaretteatminkite a osiecena ciate an ctetadas are sree oe ele 
Raphistoma Nasoni Hall (sp.). Trenton Group of Wisconsin 
RUSE cz ens cee acoteaspe oa ore Reson’ | WES | cater! Hao SSeS cece Senco SCLCO SoH ee re= ae nae 
Murchisonia Milleri Hall. . Trenton Group species in New York, Canada, etc 79 
RY bY conocecodoscancecoscoond ened oS | boson) boSsabe ce toscedsconsclacebasseosece SSnScoeseiasscese|) Soaaeene 
(TES Gconepe cr apse sees iee cal cca) Heceos ei Renee eee ane ine nera rans acntd reece nee esetern aa? [hmeaee ce 
Pleurotomaria Lonensis, n. sp ...-...-... |------ x Wh. | pesaqeetncoga so aoc CABO SODA DEBE COSHOScaceuC HOA sas 80 
ADS ase ceca ne sion] sacs os) ececon barstsoscho sabaomaans chdsaassees soc mG HDA RUCODCABOESH HoaRares § 
HelicolLomaySPetecac ae Je -manleoeoeieneee= | eamiaen Ot bgeesal ME seaa cap soo Cosco ISO TEOOSEC DOSE AAR ece Ssecornroncos 81 
Maclurea anrulata, n. sp ..-..... .--.---.|-----+ x WG: | GecetecnacoScGec poco ane sc aa EEoHaFoOEoE Seno ecSoSE aon | 81 
carinats, N: Sp)<--<0.--------->-|===4-~ PS) A backed bcoSSseab SpaSncr Dae SAHA RC OSOB A EOE Be ae oae ee | 82 
subannulata, n. sp ..-......--..|------ OS | ose paccasSsoeson ner GSS5oS SaaSRCRSEE EOS Gocerbsbochonsnoes j@ 982 
RUE) soe ceta seaassmeadassoseene Pesces OEE | ena weer sae aie laine lam erin leeaae ae eerie ease ceisin ciccinceee 83 
Metoptoma ? analoga, n. sp....--..-----.--|------|------ US eae soe eemen ten cect eee ce eas seen s mecca meee ; 84 
Phillipsi;msspsassess=--eesece [ns -oe-|eceaee Wave |P- sececsecasccaccscussstcs coat sens cacueeene anemic es | (9g 
Cyrtolites sinuatus H. & W..............|------ Bg [Repos Type from the White Pine District, Nevada ........ eee 
é PTEROPODA,. 
Coleoprion minuta, n. sp......-..-.--.---.|------ x 1b) | Kocnotseq eq ae snes nt conc assoc AABe CSC anEEeoocdsee 85 
Hyolithes Vanuxemi, n. sp ......-....-...|------ Dy loasduc booctBoHsnd tecostesedcaasoncabocstEosmoree seascuchess 85 
GDH boa sac coesecdasanosneasare ce HaSaes|[Scaso> NU otela te ee a are eee ne anes Roe eee Se eee JpSencecce 
CEPHALOPODA. 
Orthoceras multicameratum Hall ........|------ x U. | A species of the Lower Trenton in New York.....- 86 
Zi oh opens eee es eer ere aease Nene [alles ne Soytyns See ein een he et Ba ee 86, 87 
Endoceras (like E. multitubulatum)......)------ oe Reece Species of Lower Trenton in New York State ...... 87 
proteiforme Hall..............|------ ean lee oral Trenton Group species............--..-------------- 86 
CRUSTACEA. : 
Leperditia bivia White ...........-....-. ig eee Type from the Schell Creek Range, Nevada ......-. 88 
ist} eos x 88 
BSyrichinv Sp: teen asses saseeeee eee ees x 88 
PPIUMUItESs aD he secre tase ele oisata sale ala Xx 88 
PCCILOPODA. 
Agnostus communis H. & W ....... mccoee Cm. | ScAoa| Eascas Type from White Pine District, Nevada ..........--) 27 
tumidosus H. & W..........--- SxS ijncoccs| seed Geol. Expl. Fortieth Par., vol. iv. p.281.---....--.---|....-.2-. 
Dicellocephalus inexpectans, n. sp...-.--. »S, | oeSooc| Reetod memos am eSescecascoceotonodt cose Gace ORCP aR eSess 90 
finalis, n.sp .....-.. Shded basses Dot bnoecs hastodas .o¢s, Bosns esas Seca pseasce Ose SuSSSe ne paan ee 89 
multicinctus H. & W....| X |------|...-.. Geol. Expl. Fortieth Par., vol. iv, p. 226..-.........-- |Sseeaaewe 
Ptycoparia annectans, n.sp ....--..----- 2S |e goo) Aooens| bSeosest orqco ese scdek ses ocr Sc osQNenoDESE Se coSeHDbOSae | 91 
granulosus H. & W.(sp.)----. (Ch Ne ecase booaed Type from Eureka District... ........---...------- | 57 
Haguei H. & W.(sp.)- Pesccse|) (A NeeESos|esscen Type from the White Pine District..............--. 57 
maculosus H. & W.(sp.). ---.| C. |..----|------ Geol. Expl. Fortieth Par., vol. iv, p. 215.......-----.- leacwaceee 
Oweni Meek........-........ G5) |kesesslbsasds Type from Big Horn Mountains, Montana .......-.. 55 
INET CERCA ER TOCNY SAB Ys) tases Ore dll ecetete at nO ate nine cle Giwin'e «wets mane a)ata mae cls ow eee een ee 58 
(Euloma 2) affinis, n. sp.?..... G4 | kasocc 1S bososincke codec ess SenSho Scns eeeeconeeapeeec HOES eHee 54 
