INDEX. 
[Names in italic are synonyms; 
in italic denote illustrations. ] 
Page. 
JX DMU NOCENDIS coscosac conn sdoéeeanodesboodessoceduoacoEs 27 
spiniferum Whiteaves...--........-.....-..------- 110 
- Acceleration of development..............-.-- 19-23, 189-190 
ACOMIPSOCeraSHHY Att). =- 5-2-2 = omen on 105, note; 111-112 
bochumense (Schliiter),-...-....-.--------.---. 111-112 
essendense (Schliiter) .............--.------------- 112 
Menem elie (SHANE) saeeeeee sess eeae eects ae 112 
PACONLECELTAS HELM Abbe epee saan eeeeeereinee ale £8, 100, 101, note 
muse, (GON woh) o> o-caonspusceon encase 90, 99, 100, 276 
JNEERSICORIB) co gsce sesso nosenda cas ssoneeaoases ssedescuscT 24 
striaries. -. 24 
Amailtheus ebrayi de Loriol..........------.------------ 234 
Am onitesasessseee see eee Bees 2 Sosa vate eet 43 
LICE TILOLUS) GeD Desist aisles sial= cieielnielaiael= =a) 152 
OCULAR UIE V SCLIN Beas eee ee eee oe ase = 191, 192, 244 
BEMGenensis\ Grea eee ale iain a elnrelelereil == 158 
GLO SOUU SHO CIN CT eetese state tee asta ae acini le nl 243, 244 
YMapoanNS (CANDO e — soconaesoene Bp oS SEES OOOH EDOOBESSES 30 
QHIGHA USEMSICM 5 -s9oscacedsssenuoscsneopaopnecasod 133 
COINS CUOMO SINGS cod aosenssonsSeaGOS ES SeeRSbnoenes 143 
clypeiformis V Orbigny....-.--.-------------------- 85 
compressissimus @'Orbigny...-.--.----------------- 142 
CONCHLOVUSI STON CZ Alem aaa ee eae ee ieee 107 
COULOTUGLOLDIS Tye meee nena see laelnelnn == lo cle 11d 
GRETA BIOIIOAIN 5 a= sa cesonSanadnasasusesoosSstos 107 
CUI US COU CZ Kage eee eee ee eee siete taeieiae= aa 107 
CAETHINS VEN Mis cae soaocsmenBeocosobosTEcuposs osc alt) 
didayanus @ Orbigny .......---.-------- oowet 181, 136, 138 
(lis nah GUO NAN Fahy 4a ee Sesc cane osoeoaesepoe cose seeEoe 141 
domeykanus Bayle and Coquand..-...--.----------. 115 
dumasianus d’Orbigny..---.----------------++-+--- 139 
CMO NUD LOLS] oi BID Cote metale eins areola alata lalla oleate ales elal 107 
ewaldi yon Buch ---- 46,48 
galeatus d’Orbigny..--..-----------.---------- 135, 136, 142 
GEVILUUUUS CU. OLDIE Tyee ela alm =m == me ala mle =Ia\= = <inlalale == =I 84,90 
GCN AT IED RODIN? Soon eaeseooscasooaaSce=neAc 197, 241 
haplophylla Redtenbacher .........---------------- 48 
[prophiD: ((EINEAH) oSoeennSassaee secpoopadsescodsececass 103 
heteropleurus (Neumayr and Uhlig).-....-------.-- 90 
laficlawius Sharpe)... -------------------=-----=---= 111 
WENMCULATLS ON CWa nee seam ee enie wens ene anm =e 71-75 
PRONTO NEW IAGO) om Sook enonodseas bocce SoenaabesoSSES 134 
(hfe ehtas, INNO) tNGRY ao 5eeoaconoSseHmonSHSBHBOOSconesoSoeoSS 66 
PTLOUITUNTUT LUC aati ahlot alata ote foo le ohm a l = =m em mle mo 108-110 
GIGHTIDOMCINS = — scoot toca spe onononsasoosoneassassc 108 
muamtellt SOWCIDY -«- «<= ---------=---00-------- 114, 115, 141 
marcousanus d’Orbigny.-..----.------------------- 90 
MUULEND ELGUCLy jem a2 22 ane ew one mele one = == 239 
MLOSeNSis GlOLDIP Meese tesa = aoe 2 a ee 84 
AUUS ILS Cs OLD LE MN peter a eter mee emcee tale 100 
MOCOS0LCES SCOINMLC Rese seems ee = a ale aa lol 111 
orbignyanus Geinitz ......--.-------------------- 235, 240 
pedernalis Roemer .........------------- 59, 64, 82, 153, 165 
figures in black-face type are numbers of pages on which descriptions appear; figures 
Page. 
Ammonites—Continued. 
DUN CeEnalssONPB UC hgeane eee eee eee eee eee 157, 165 
PLA Cente Ka Ves: oo teh ste yocrenis cece oes Seen ree 211 
pleunisepia CONTEC ee eae eeitlleee ee cea eee eee 59 
polyops7s DujaArdine = 2... eee ee 206, 207, 237, 240, 243 
PTOVINCLANS CZ OLDIP Dees eee ee eee eee 131 
TOE LALOIS CUO DR OKY oa5 5 Gonoscconsomodedasees 138, 140, 141 
TENCULETUSDATDC EEE Ee eee eee en eee eee ee eee 112 
NEQUIENLANUS GLOLDIE Diyas eee eee eee eee 99, 100 
movi, DhiOliCre pee enees ees see esse eee eee 46 
TOLOMLAGENSIS | CITAN CCl as esas ee ese sees eee 107 
MOYETIONUS CLO CDI SD eee ee eee eee eee ee eee eae 161, note 
GUSLLCUS Ya cate Ser ele nn eae SS eee 106, note 
StUGIHOTDES esse pees eam eeeeae eee eee 83 
SIUCILO UI, S OUI AIT Cl tate tel alee te ele 118 
SUTLACUSHY OUND UC Diemer liek ee ele eee eenet 32, 146-150 
syrtalis Morton 205, 207, 237 
syrtalis var. orbignyanus Schliter......------ 235, 241, 242 
syrtalis var. polyopsis Schliiter.......-...---.------ 239 
LONUUCUSP ELAN OL Cee r eel ete eee 241 
CCU ET ANLOT LO De eeeeeiee eae iale asl isle ae ieee ela 233 
PUAN 5358 Cannsansaocsecebrescesoentesconessdososes 19 
RLSROS|StOlCZ kalpeme eee eee ea te ee ee a 115 
vibraycanus d’ Orbigny-.-----.--------------- 149, 178, 240 
VICUNALLS| SOM CZ cosas ste teseste is tte ee etal 115 
WiELUANCl GiOLDIE Divi seeee see eae eee 110 
woolgari Mantell 
AIM ONT GIN oe ae eee = ea eee eee ae 
Cretaceous... -- 102 
disappearance of characters .......-.........--:-.- 23 
of the Jura, relation to those of the Cretaceous.... 19-20 
PNM R Ne coed oo cscaknobdecsatenussssuenenteonosasceoas 19 
Arrestation of development ...---..----.-.-.---------- 20-23 
ANSPIG OCETAS = fore <i oo i— a ala ein ww nlm nin mim inim mine = =la=i= = =) 19, 106, 116 
JEG MDT & 6 Soo s Seid soconet aed sees soebacsedsesdece 21 
Barroisiceras Grossouvre. ...-..--------------- 26, 27, 104, 112 
desmoulinsi Grossouvre........---..--------------- 105 
haberfellneri Grossouvre ........------ 104 
haueri Grossouvre os EyeLOD) 
Bathmoceras ...--.------- .--- 68, note 
Buchiceras Hyatt .....-.- 144, 145,.191-193 
attenuatum Hyatt -.---- 33, 151 
teluidernense Cragin .--2---.---- 222 022-222 sean eee 158 
bilobatum -.......- 9, 30, 31, 191 
ewaldi (von Buch) . 
fourneli Bayle... - 
--- 40,44, 46, 51 
-- 45,51 
harttii (Hyatt) -. 103 
serratum Hyatt... 51-4 
slizewiczi Fallot . -.- 49 
swallovi (Shumard) - - 122 
tissoti Bayle........ ae 42 
Buchiceratide Hyatt. . - 24, 26,35, 144 
Calycoceras navicularis ...............-..---..--..---- 113 
