178 



INDEX TO THE PORIFERA 



tylostyle, 137 

 tylote, 137 

 Typton, 88 



Uncinataria, diagnosis ami 



classification, 123, 124 

 uncinate, 117 

 undcTKrowth, 71 

 unipolar immigration, 75 

 C'ru'ji'.ai/a, 152 

 Ute, 9, ilO 

 Utella, 110 



Vasseur, 64 



vegetative reproduction, 63 



Velinea, 154 

 Ventriculites, 3, 7, 125 

 Ventricvlitido.e, 125 

 Veiongia, 154 

 Vcrrucocoeliu, 124 

 Verntcnlina, 150 

 Verticillites, 111 

 Vetidina, 149 

 Vibulinns, 153 

 Vitrolhda, 122 

 Voinerula, 152 

 Vosmaer, 55, 57, 85, 87, 



163, 165 

 Vosmaeria, 110, 153 

 Vosyiiaeropsit:, 110 



IFai/^-rta, 122 

 wandering cells, 28, 31 

 Weltner, 165 

 Willey, 166 

 Wright, 157 



xeuophya, 37 

 Xenospongia, 151 



yolk granules, 65, 83 

 Yvesia, 152 



Zittel, 165, 168 

 zoa impersonalia, 91 

 zygosis, 137 



