INDEX TO VOLUME VIII. 705 



PAGE. 



Physospongia colletti Hall 337 



dawsoni (Whitfleld) 237 



Pollakidae Marshall 238 



Polypora, associated with sponges 245 



Preservation of fossil sponges 212 



Prismopora, associated with sponges : 245 



Protospongia Salter 216,237 



fenestrata Salter 237 



? minor Matthew 237 



? minor var. distans Matthew 237 



tetranema Dawson 237 



Pulvillus Carter 218 



Baphidistia Carter 218 



Bauffella Ulrich 217.236 



flliosa Ulrich 236 



palmipes Ulrich 236 



Reoeptaculites DeFrance 217.238 



Beceptaculitidae Hinde 238 



Beniera Carter 218 



Rhabdaria Billings 240 



fragilis Billings 240 



furcata Billings 240 



Ribeiria Sharpe 241 



" ? calcifera Billings 241 



longiuscula Billings 241 



Saccospongia Uh-ich 217,239 



dan illensis Uh-ich 239 



rudis Uh-ich 1239 



Sebargasia Steinman 218 



SECTION III. AMERICAN PALEOZOIC SPONGES 209 



SECTION IV. DEVONIAN AND CARBONIFEROUS SPONGES 243 



SECTION V, LOWER SILURIAN SPONGES 253 



Seliscothon mantelli Goldfuss .- 22o* 



Silurian System. Sponges of 217,233,255 



Soliasia Steinman 218 



(Sphaerolites Hinde) 228 



( " nicholsoni Hinde) 227,273 



Spongiee, tabular list and classification. 233 



Spongia incertse sedis 240 



Streptosolen Ulrich and Everett 217,235,257.272,273 



obconicus Ulrich and Everett 235,274* 



Streptospongia Uh-ich 217, 240 



labyrinthica Ulrich 240 



Strobilospongia Beecher 217 



Stromatoporoidea 216,221,282 



Strotospongia Uh-ich and Everett 217,2-39, 276 



maculosa Ulrich and Everett 239,277* 



Sub-carboniferous System, Sponges of 218,233 



Syringelasma Uh-ich read for Syringophyllum 21*. 222.235, 250 



wortheni Ulrich read for Syringophyllum! 235, 250* 



(Syringophyllum Ulrich; name pre-occupied See.Syringelasma.) 

 ( ' ' wortheni Ulrieh See Syringelasma wortheni.) 



88 



