List of Loiver Silnrian Fossils, Cincinnati Group. 81 



Genus Tetradium, Dana. Gr. tetradeion, four. 



442 Tetradium minus, Safford. L. minus, less. 



443 columnare, Hall. L. columna, a column. 



Family PoritidcB. Gr. j^oros, a pore. 

 Genus Protarea, Edwards and Haime. Gr. j^ofos, first; araios, porous. 



444 Protaroa vetusta, Edwards and Haime. L. vetustus, old. 



Family 3fineporidce. L. nu'lle, a thousand; Gr. ^9o/'o.9. 



Genus Fistulipora, McCoy. L.fstula, a pipe; Gr. poros, a pore. 



445 Fistulipora flabellata, Ulrieh. L. Jlabellum, a fan. 



446 robusta, Ulrieh. L. robustus, strong. 



447 Vmultipora, James. L. multus, many; Gr. poro.s\ 



Genus Crateripora, Ulrieh. Gr. Tcrater, a cup; poros. 



448 Crateripora erecta, Ulrieh. L. erectus, erect. 



449 lineata, Ulrieh. L. lineatus.^ lined. 



450 expansa, Ulrieh. L. expansus, expanded. 



SUB-KINGDOM PROTOZOA. 



Class Rhizopoda. Gr. rhiza, a root; pious, jjodos, a foot. 

 Order Spoxgida. Gr. sjioggos (L. sjjongia), a sponge. 

 Genus Astylospongia.^ Eoemer. Gr. a, not; stulos, a pillar; spoggos. 



451 Astylospongia foveolata, James. Jj. fovea, a pit; latus, broad. 



452 tumida, James. L. tumidus, swollen. 



Genus Jficro.'ijJongia^ Miller and Dj^er. Gr. miki'os., small; sjjoggos, 



a sponge. 



453 Microspongia gregaria, Miller and D3er. L. gregarius, of a flock. 



Genus Stromatopora, Goldfuss. Gr. stroma, spread out; poros. 



454 Stromatopora papillata, James. L. papilla, a teat. 



455 Lj'oni, James. 



456 Cincinnatiensis, James. 



IXCERTA SEDES. 



457 Paseeolus, Billings, lu. 2)asceolus, a purse. 



458 Claudei, S. A. Miller. 



459 Darwini, S. A. Miller. 



l>!oT:E.—Pasceo?Ks has been referred by some authorities to 

 the Sponges, and by others to the Cystidians. 



