232 



INDEX TO THE GENERA. 



Trigonotreta, 22, 54, 62 

 Triloculina, 132 

 Trilophodon, 198 

 Trimerus, 16 

 Trinucleum, 18 

 Trinucleus, 18 

 Triton, 168 

 Tritonium, 168 

 Trivia, 168 

 Trochita, 164, 169 

 Trochocyathus, 137 

 Trochonema, 25 

 Trochus, 87, 169 

 Tropidolepisma, 178 

 Truncatella, 178 

 Tiihiporites, 11 

 Tiibiilipora, 151 

 Tnrbo, 114, 169 

 Turbonilla, 169 

 Turritella, 88, 169 

 Typhis, 170 



Ulidium, 148 

 Ulodendron, 32 

 Uuio, 113, 158 



Urasterella, 15 

 Urestlieues, 118 



Yaginiilina, 104 

 Ventriculites, 105 

 Venus, 79, 158, 177 

 Vermetus, 170 

 Vertebraria, 101, 200 

 Verticillopora, 39 

 Vola, 159 

 Volsella, 71 

 Voluta, 170 

 Vomhatus, 188 



Waldheimia, 152 

 WUkinsonia, 125 



Xylocaryon, 125 



Zamites, 102 

 Zaplirentifi, 39 

 ZeugophyUites, 101, 200 

 Zizyphinus, 171, 195 

 Zygomaturus, 195 



CAMBKIDQE: PRINTED BY C. J. CLAY, M.A. AT THE UNIVKRSITY PRESS. 



