INDEX. 



Note. — Names of species which are regarded as synonyms or as invalid (and the 

 pages on which they occur), whether contained in the tables of references or 

 elsewhere in the text, also any species merely referred to incidentally in the 

 text, are printed in italics. 



AcANTHONAUTILUS, 118, 121, 



122, 216, 221 



bispinosus, 118, 121 



cornutus, 121 

 Actinoceras, 28, 32, 211, 221 



Bigsbyi, 32 



giganteum, 28, 29, 30, 31, 32, 

 223 



insulare, 30, 31, 32, 33 



propinquum, 33 



pyramidatvm, 28 



Simmsii, 28 

 AcTINOCERATIDiE, 28, 211, 222 

 Aijanides : 



diadema, 179 

 fasciculatus, 136 



Henslowi, 202, 203 



micronotus, 177 



obtusus, 163 



reticulatus, 183 



s/ili.-i ricus, 155, 173 



spJisericus, var. /3 crenistria, 

 158 



striatus, 157, 160 



striolatu8, 179 



subfurcatus, 135 



truncatus, 165 



Aipoceras, 116, 131, 132, 21G 



compression, 116 



(jibber osnm, 117 



Hainesianum, 131 

 Ammonellipsites : 



compressus, 202 



fimatus, 134 

 Ammonites, 221 



carbonarius, 154 



diadema, 179, 180 



Henslowi, 68, 202, 203, 204, 

 205 



Listen, 136, 179 



micronotus, 177 



princeps, 134 



reticulatus, 183 



sphsericus, 154, 155,158,160, 

 163, 173 



spiralis, 191 



striatus, 157, 160, 161 



truncatus, 165 

 Ammonoidea, 132, 217 

 Angulata, 16, 211 

 Annulata, 14, 211 

 Apheleceras, 65, 72, 73, 118, 

 214 



difficile, 67 



Apheleceras — 



discoideum, 67, 70 



exaratus, 71 



Hibernicum, 68, 70 



mutabile, 65, 66, 67, 68, 69, 

 70, 223 



trochlea, 67, 70,71, 72 

 Apioceras : 



fusiforme, 43 

 Appendix, 206 

 Ascoceras, 221 



Asymptoceras, 117, 122, 123, 

 124,217 



conspicuum, 125 



crassilabrum, 122, 123, 125, 132 



dorsale, 126 



Foordi, 123, 124 



Beyrichoceras, e.g. (see GHy- 

 phioceras), 163, 177, 219 

 bilingue, 186 

 Browni, 175 

 cordatum, 188 

 corpuleutum, 176 

 Davisi, 187 

 diadema, 179 

 difficile, 171 



