25S 



INDEX. 





PAGE 





PAGE 



Spirillina 



. 18 



Thamniscus .... 



. 44 



Spirorbis 



. 54 



— dubius . . .44, 244 



— helix 



. 54 



Thecidaeidae .... 



142 



— Permianus 



. 55 



— Mediterranea 



80 



Spongia .... 



. 11 



Thecodonts .... 



237 



Stcnopora 



. 28 



Thecodontosaurus 



. 238 



— columnaris 



. 28 



— antiquns 



. 238 



Stichostegia 



. 17 



Tragos ..... 



13 



Stigmaria 



9, 243 



— Binneyi 



. 13 



Streptorhynchus 



. 107 



— Tunstallensis . . 



13 



— pelargonatus 



. 108 



Trigonella .... 



. Ill 



Strigocephalidae 



. 141 



Trigoniidae .... 



183 



Strigocephalus (internal structure of) 



. 70 



Trigonotreta 



126 



Strophalosia . 



. 93 



— alata 



130 



— excavata 



. 98 



— cristata 



127 



— Gerardi 



. 96 



— Jonesiana . 



129 



— Goldfussi 



. 96 



— multiplicata . 



129 



— Morrisiana . 



99, 245 



— Permiana 



133 



— parva . 



. 102 



— undulata 



131 



Strophomena . 



. 103 



Tubicolae .... 



54 



Strophomenidae 



. 103 



Turbinidae .... 



204 



Synocladia 



. 38 



Turbo .... 



204 



— virgulacea 



; . 39 



— helicinus 



204 







— Mancuniensis 



205 



Terebratella 



144, 245 



— Permianus 



206 



Terebratula 



. 143, 246 



— Taylorianus .... 



•207 



Terebratellidae 



. 245 



— Thomsonianus 



206 



Terebratulidae 



143, 245 







— (muscular system of) 



. 74 



Vermilia ..... 



56 



Terebratulina . 





— obscura .... 



56 



Tetrabranchiata 



. 218 



Vertebrata . . . • • 



221 



Textularia 



. 18 







— cuneiformis 



. 18 



Waldheimia ... 



145 



— Triticum 



. 18 



— Australis (muscular system of) 



74 



Thamniscidse 



43 







