618 



GOMPARA TIVE A NA TOMY 



Tumtellida:, 6 

 Tylaster, 297 

 Tylodina, 10 



UlNTACRINUS, 309 

 UmhrcUa, 10 

 UmbreUidau 10 

 Uncini, 182 

 Unio, 17 

 „ Marijamtifcriifi {Margaritana), 17, 

 35 



Unionidw, 17 

 Unionina; 50 

 Uniophuru, 299 

 Urechinus, 293 

 Urns, ciliated, 437 

 Utriculu.% 180 



Vaoinvlii).^, S 



Vfiqi mil us, 45 

 Volnisin: .'!)0 

 Vidn'/ido, i; 

 Veliger, larva, 1, 257 

 Velum, 250 

 Vriin-area, 18 

 Vi'inricardia, 17 

 Veiirrida;, 18 

 Venus, 18 



Vermetidce, 6 



Vermetus, 108, 248 



Vertebral ossicles (Ojili.), 356 



Verticardiidcf', 51 



Vitrina, S 



Volutidai, 6 



Vulsella, 17 



Wachsmuth and S^jringer's rule, iliagrani, 



374 

 Wandering cells (auiceljocytes) (Ecliin.), 



415 

 Water lung (Hoi.), 487 ; pore (Scaph.), 



221 ; pores (Crin.), 377 



Xenocrinus, 306 

 Xenophoridce, 6 

 Xylopliaga, 21 



YoLDiA, 14. 

 Vpstlothiin'a, 409 



Zeugobranchia, 4 

 Zonites, 8 

 Zoroaster, 298 



,, fulgeiis, apical system, 326 



Zoroasterido'; 298 

 Zygoneury, 137 



THE END 



Printed hy R. 6^ R. Clank. Limitku, ICdinhuygk. 



