226 



Trans. Acad. ScL of St. Louis. 



Naticopsis 192 

 Nucleospira 199, 214. pi. 20 

 Nucula 172-3, 205, 213. pi. 15 

 Nuculana 175 



Reticularia 166, 205, 207, 211-2. 



pl.l4 

 Rhipidomella 150, 151, 181-2, 204, 



208, 211, 212-3. i)Z. 12, i (J 

 Rhodocrinus 208 

 Rhynchonella 156, 197-8, 207 

 Rhynchophora 157, 212. pi. 13 

 Orthoceras 154, 193,206, 2U.pl. 17 Rinodina 30 

 Orthonota 172 



Orthothetes 151, 159, 181, 195-6, Sanguinolaria 162 

 204, 206, 210, 212-4. pL 14, 16, SaDguinolites 171, 205 



Scalarituba 204 



Opegrapha 33 

 Orthis 209 



19 



Pannaria 28 



Palaeoneilo 173-4, 205-6, 213. pi. 



IS 

 Permelia 26 

 Pernopecten 168, 189-190, 205-8, 



2lS.pl. 15, 17 

 Pertusaria 30 



Phanerotinus 179, 205, 207. 

 Physcia 27 

 Placodium 29 

 Platygrapha 33 

 Platyschisma 205 

 Pleurotomaria 191, 00-1, 205, 2 14. 



pi. 17 

 Porcellia 206 



Schizodus 176, 205, 213. pi. 15 

 Schizophoria 182, 196, 204, 213-4. 



pl.l6jl9 

 Segestria 38 



Spathella 172, 205, 2l3.pl. 15 

 Sphenotus 171, 206, 213. pi. IS 

 Spirifer 169, 163, 165-7, 188, 198, 



205-8, 2n-i.pl. 14,16,20 

 Spiriferina 198-9, 205, 214. pi. 20 

 Spirophyton 206 

 Sticta 28 

 Stigmatidium 36 

 Straparollus 154, 178, 191, 205-6, 



209, 211, 213-4. pZ. 15, i 7 

 Streptorhynchus 196 



^'213.Tl6 '"*''' '"'' ""' ''"' Stro^hosJylus 192-3. 213. pi. 1 7 



Productus 160-1, 185-6, 196, 204, 

 2Q^-l,2l\-i. pi. 14, 16, 19 



Proetus 206 



Promacrus 177, 206-7 



Pterinopecten 167-8, 205, 213. pi. 

 15 



Ptychodesma 206 



Pugnax 150, 154, 203, 212. pi. 13 



Pyrenastrum 39 



Pyrenula 38 



Pyxine 27 



Radix 2 

 Ramalina 26 



Succinea 2 

 Syringothyris 158, 205, 208, 212. 

 pi. 13 



Thelotrema 30 

 Triboloceras 206 

 Tropidodiscus 205 

 Trypthelium 38 



Unio 145-6. pi. 11 

 Usnea 26 



Worthenia 200, 214. pi. 20 



Zaphrentis 180, 204, 208 



