494 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



PAGE 



Ute formation, defined 7 



fossils from 26. 30, 58, 97, 106, 107 



Blacksmith Fork, correlated 171 



section of .■ iQS-iqS 



Ute limestone, definition of by Fortieth Parallel Survey 7 



Vanuxemella contracta, stratigraphic position and association 202, 214 



varians, see Sccnella. 



Vascular (Pallial) sinuses, defined 160 



Ventral valve, defined I59 



Vermilion Pass, fossils from 301 



Lower Cambrian conglomerate at 426 



pre-Cambrian rocks at 430 



vermilionensis, see Oholella. 



Vermont formation discussed 268-26Q 



vermontana, see Barrandia, Mcsonacis, Olenellns, OleneUus (Mesonacis), 

 and Paradoxidcs. 



de Verneuil, E. P., bibliographic reference 162 



de Verneuil, E. P., and Barrande, J., bibliographic reference 114 



Visceral area, defined 160 



Vogdes, A. W., bibliographic reference T^yy 



Volborthia, classification of 142, 143 



evolution of pi. 11 (pp. 140-141) 



Waagen, W. H., bibliographic references 114-115, 162 



Walcott, C. D., bibliographic references 115-116, 162, 219, 377, 378 



on trilobites as a mud-burrowing animal similar to Limulus 241-242 



previous papers on the Brachiopoda S3 



walcottanus, see OleneUus (Holrnia) and IVanneria. 

 zvalcotti, see OleneUus and Paradoxidcs. 

 zualkeri, see Oryctocephalus. 



Wanner, A., acknowledgments 234 



bibliographic reference 378 



mentioned 233, 234, 266, 297, 304, 305, 306, 307 



W anneria, new genns 296 



anterior glabellar lobe in 243 



compared with Callavia 297, 299 



Elliptocephala 298 



Holrnia 288, 398 



Mesonacis 298 



Nevadia 298 



delimitation of genus 248 



development of, shown in diagram 249 



eye lobes in 239 



genal and intergenal spines in • 237 



geographic distribution of 253 



mentioned 236, 246, 247, 250, 276, 309 



new genus, species referred to the genus listed 232 



stratigraphic distribution tabulated 251 



stratigraphic position of 297 



