;if 



COMPARATIVE ANATOMY 



Tiirniellidcr, 6 

 Tylastn; :?97 

 Tjjhidiiui., 10 



ViNTAORINVS, 300 



Umbrdlu, 10 

 UiiibreUida; 10 

 Uncini, 182 

 Unki, 17 



,, Margandifents (Margarllana), 17, 

 35 



,, pmctorum, 17 

 Uiiionidce, 17 

 Uiiio)nnc'-\ 50 

 Uiiinjilinra, 299 

 UreeJiiiius, H93 

 Urus, ciliated, 437 

 Utriculus, 180 



Vaginulw^, 8 

 Vafjiiiulus^ 45 

 V,drasl';;-200 

 Valvatidc^, 6 

 Velifjer, larva, 1, 257 

 Velum, 250 

 Veiieraira, IS 

 VenericKrdUt, 17 

 Venerid(i\ IS 

 Venus, IS 



VeriJietidce, 6 



Vermetus, 108, 248 



Vertebral ossicles (Oph. ), 356 



Vf'tiicordiidcc, 51 



Vitrina, 8 



V()l}did.(i\ 6 



Vulsella, 17 



Wachsmuth and Springer's rule, diagram, 



374 

 Wandering cells (amoebocytes) (Eohin.), 

 . 415 

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



221 ; pores (Crin.), 377 



Xenocrinus, 306 

 Xrnophi>rida\ 6 

 Xylopliaga, $1 



YOLDIA, 14. 

 Ypsilothuda, 409 



ZsuaoBRAisaHiA, 4 

 Zoiiites, 8 

 Ziinmsln-, 30S 



,, fiilgens, apical system, 326 



Zoroasterido', 29S 

 Zygoneury, 137 



THE END 



Frintcdl'y R. i^ R Clakic, Limited, Edinburgh, 



