162 



PROTOZOA. 



[PAL. PAS. 



FIG. 112. Palseospongia trentonensis. View of calice. 



vening space minutely porous. 

 P. cratera. 



Type 



cratera, Roemer, 1848, (Siphonia cratera,) 

 Leonh. und Bronn's Jahrb., p. 685, 

 Niagara Gr. 



roemeri, Walcott, 1885, Monog. U. S. Geo. 



Sur., vol. 8, p. 99, Devonian. 

 PALJEOSPONGIA, D'Orbigny, 1850, Prodr. d. 

 Palfeont., t. 1, p. 26. [Ety. palaios, an- 

 cient; spongia, sponge.] Cyathiform, 

 irregular, surface reticulated irregu- 

 larly, by concentric and transverse 

 lines. Type P. cyathiformis. 



cyathiformis, Hall, 1847, ( 



cyathi- 



, , , -- - 



formis,) Pal. N. Y., vol. 1, p. 72, Tren- 

 ton Gr. 



trentonensis, Worthen, 

 1875, (Cnemidium tren- 

 tonense,) Geo. Sur. 111., 

 vol. 6, p. 491, Trenton 

 Gr. 



PASCEOLUS, Billings, 1857, 

 Rep. of Progr. Geo. 

 Sur. Can., p. 

 342. [Ety. 

 pasceolus, 

 leather mon- 

 eybag.] Sub- 

 globular bod- 

 ies marked 

 on the cast 

 as if by po- 

 lygonal plates, and with 

 a scar or depression for 

 an attaching stem. Type 

 P. globosus. 



claudii, S. A. Miller, 

 1874, Gin. Quar. Jour. 

 Sci., vol. 1, p. 6, Hud. 

 Riv. Gr. 



darwini, S. A. Miller, 

 1874, Cin. Quar. Jour. 

 Sci., vol. 1, p. 5, Hud. 

 Riv. Gr. 



globosus, Billings, 1857, 

 Rep. of Progr. Geo. 

 Sur. Can., p. 343, Tren- 

 ton Gr. 



gregarius, Billings, 1866, Catal. Sil. Foss. 

 Antic., p. 72, Anticosti Gr. 



FIG. 115. Pasceolus 



darwini. Upper 



surface. 



FIG. 116. Pasceolus 



darwini. Under 



surface. 



halli, Billings, 1857, Rep. of Progr. Geo. 

 Sur. Can., p. 342, Anticosti Gr. 



intermedius, Billings, 1866, 

 Catal. Sil. Foss. Antic., 

 p., 72, Anticosti Gr. 



FIG. 113. Paleeospougia treutonensis. Side view. 



FIG. 117. Pasceolt 

 halli. 



