80 GENERAL INDEX. 



Arthrostylus Ulrich VIII.363,400 



tenuis Ulrich VIII, 400 



Articulate 11,393; 111,299.320,363,390,416,447,460,540; V, 525, 612; VI, 497, 508; VIII.153 



" (suborder of Palseocrinoidea) VIII, 197 



Asaphus Brongniart VI, 497 



" (Isotelus) megistos Locke VI.498 



( " ) vigilans M. & W VI.497* 



Ascoceras Barrande VIII, 151 



southwelli Worthen VIII, 151* 



Ascodictyum Nicholson and Etheridge VIII, 367 



fusiforme N. & E VIII.367 



Ascodictyonidse Ulrich VIII. 367 



Aspidodus Newberry and Worthen 11,92; VII, 63 



convolutus N. & W 11,94*; VII.67 



crenulatus N. & W 11,93*; VI.419 



Aspidopora Ulrich VIII.373 



areolate Ulr VIII.373 



(Asteracanthus) siderius Leidy VI.444,445 



( Asterocrinus Lyon) 11,288 



Asteroidea 11,277; 111.499,526; V.474,510; VII.327 



Asteroptychius Agassiz IV.370; VI.435; VII.248 



bellulus St. J. & W VI, 439*: VII.249 



keokuk St. J. & W VI.436* 



ornatus Ag IV, 371 



sancti-ludovici St. J. & W VI.437* 



semiornatus McCoy IV, 371; VI, 438 



tenellus St. J. & W VII.248* 



(?) tenuis St. J. & W '. VI.438* 



triangularis N. & W IV, 370*; VI, 436 



vetustus St. J. & W VI.435* 



AstrJEOSpongia Roomer 111,419; VIII.212,217,238 



hamiltonensis M. & W III. 419*; VIII.238 



meniscus Roem 111,419; VIII.238 



Astroconia Sollas VIII.212,238 



granti Sollas VIII.238 



(Astroita Wolfart) III.407 



( Astropodia sp. Ure) 11.179 



Astylospongia Roemer 111,344; VI.491,499; VIII, 211, 217, 223, 234 



christiani M. & W 111,344*; VIII.234 



imbricato-articulata Roem VIII, 234 



" inciso-lobata Roem VIII.234 



inornata Hall VIII,217,227 



(?)parvula Bill VIII.234 



(?)perryi Bill '. VIII.234 



prasmorsa Goldf VI.499*; VIII,224*,234 



var. nux-moschata Hall VIII, 234 



roemeri Hinde VIII, 234 



stellatim- sulcata Roem VIII, 234 



Atactopora Ulrich VIII.377 



hirsute Ulrich VIII,277 



Atectoporella Ulrich VIII.370,412 



ortoni Nicholson VIII. 418 



typicalis Ulrich VIII.370 



