SPA. STI.j 



MOLLUSCOIDA. 



robusta, Ulrich, (in press,) Geo. Sur. 111., 

 vol. 8, pi. 64, Up. Coal. Meas. 



subquadrans, Ulrich, (in press,) Geo. Sur. 



111., vol. 8, pi. 64, Kaskaskia Gr. 

 SPATIOPORA, Ulrich, 1882, Jour. Gin. Soc. 

 Nat. Hist., p. 155. [Ety. spalium, spread | 

 out; poros, pore.] Thin, incrusting; | 

 surface smooth or tuberculated ; cells 



shallow ; interstitial cells and spiniform ! 



tubuli. Type S. aspera. 

 areolata, Foord, 1883, Cont. to Micropalse- 



ontology, p. 21, Trenton Gr. 

 aspera, Ulrich, 1883, Jour. Gin. Soc. Nat. 



Hist,, vol. 6, p. 166, Hud. Riv. Gr. 

 Hneata, Ulrich, 1883, Jour. Gin. Soc. Nat, 



Hist., vol. 6, p. 167, Hud. Riv- Gr, 

 maculosa, Ulrich, 1883, Jour. Gin. Soc. 



Nat. Hist., vol. 6, p. 167, Hud. Riv. Gr. 

 montifera, Ulrich, 1883, Jour. Gin. Soc. 



Nat. Hist., vol. 6, p. 168, Hud. Riv. Gr. 



FIG. 514. Spatiopora tuberculata on an 

 Orthoceras. 



tuberculata, Edwards & Haime, 1851, 

 (Chetetes tuberculatus,) Pol. Foss. d. 

 Terr. Pal., p. 268, Hud. Riv. Gr. 

 SPHBAGIOPORA, (in press,) Ulrich, Geo. Sur. 

 111., vol. 8, p. 398. Parasitic, forming 

 very small subhemispheric patches on 

 foreign bodies; cells with circular ap- 

 ertures and slight peristome, arranged 

 in a subradial manner, in single or 

 double rows. Type S. parasitica. 



parasitica, Ulrich, (in press,) Geo. Sur. 

 111., vol. 8, pi. 65, Kaskaskia Gr. and 

 Coal Meas. 



STICTOPORA, Hall, 1847, Pal. N. Y., vol. 1, 

 p. 73. [Ety. stictos, punctured ; poros, 

 pore.] Zoarium attached to foreign 

 objects by an expanded base, ramose, 

 branches thin, furnishing an acutely 

 elliptical transverse section, and com- 

 posed of two layers of cells, separated 

 by epithecal laminae ; cell apertures oval 

 or circular, surrounded by peristome, 

 separated by raised longitudinal lines; 

 no interstitial cells ; margins nonporifer- 

 ous and striated. Type S. elegantula. 



acuta, Hall, 1847, Pal. N. Y., vol. 1, p. 74, 

 Trenton Gr. 



alcyone, Billings, 1865, (Ptilodictya alcy- 

 one,) Catal. Sil. Foss. Antic., p. 36, An- 

 ticosti Gr. 



alternata, Hall, 1887, Pal. N. Y., vol. 6, 

 pi. xxiii, A, Low. Held. Gr. 



angularis, Hall, 1887, Pal. N. Y., vol. 6, p. 

 252, Ham. Gr. 



arguta, Billings, 1865, (Ptilodictya arguta,) 

 Catal. Sil. Foss. Antic., p. 36, Anti- 

 costi Gr. 



basalis, Ulrich, 1882, Jour. Cin. Soc. Nat. 



Hist., vol. 5. p. 169, Trenton Gr. 

 bifurcata, VanCleve, 1883, 12th Rep. 



Ind. Geo. and Nat. Hist., p. 267, Ni- 

 agara Gr. 



bifurcata, Hall, see S. bristolensis. 

 bristolensis, n. sp. Ham. Gr. Proposed 



instead of S. bifurcata, Hall, 1887, Pal. 



N. Y., vol. 6, p. 254, which name was 



preoccupied, 

 carbonaria, Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., p. 160, and 



Ohio Pal., vol. 2, p. 328, 



Coal. Meas. 

 compress a, VanCleve, 



1883, 12th Rep. Ind. 



Geol., and Nat. Hist., p. 



267, Niagara Gr. 

 crassa, Hall, 1852, Pal. N. 



Y., vol. 2, p. 45, Clin- 

 ton Gr. 

 crescens, Hall, 1887, Pal. 



N. Y., vol. 6, p. 91, Up. 



Held. Gr. 

 crenulata, Hall, 1884, 



Rep. St. Geol., p. 44, 



Hani. Gr. 

 dichotoma, Hall, syn. for FIG. 515. sticto- 



S. subcarinata. pora carbonaria. 



divergens, Hall, 1887, Pal. 



N. Y., vol. 6, p. 257, Ham. Gr. 

 elegantula, Hall, 1847, Pal. N. Y., vol. 1, 



p. 75, Trenton Gr. 

 fenestrata, see Sulcopora fenestrata. 

 fidelis, Ulrich. 1886, 14th Rep. Geo. Sur. 



Minn., p. 68, Trenton Gr. 

 fragilis, see Dicranopora fragilis. 

 fruticosa, Hall, 1881, Bryozoans of the 



Up. Held. Gr.,p.l4, and Rep. St. Geol. 



pi. 25, fig. 12, 13, Up. Held. Gr. 



gilberti, Meek, 1871, 

 Proc. Acad. Nat. Sci. 

 Phil., p. 63, and Ohio 

 Pal., vol. 1, p. 94, Up. 

 Held. Gr. 



glomerata, Hall, 1847, 

 Pal. N. Y., vol. 1, p. 

 17, Chazy Gr. 

 granatula, Hall, 1887, 



Pal. N. Y., vol. 6, p. 38, Low. Held. Gr. 

 granifera, Hall, 1884, Rep. St. Geol., p. 



45, Ham. Gr. 

 graminifolia, Ringueberg, 1884, Proc. 



Acad. Nat. Sci., p. 147, Niagara Gr. 



Very poorly defined, 

 incisurata, Hall, 1884, Rep. St. Geol., p. 



38, Ham. Gr. 

 incrassata, Hall, 1884, Rep. St. Geol., p. 



47, Ham. Gr. 



indenta, Hall, syn. for S. incisurata. 

 interstriata, Hall, 1884, Rep. St. Geol., p. 



45, Ham. Gr. 

 invertis, Hall, 1881, Bryozoans of the Up. 



Held. Gr., p. 15, and" Rep. St. Geol., pi. 



25, fig. 24-26, Up. Held. Gr. 

 labyrinthica, Hall, 1847, Pal. N. Y., vol. 



1, p. 50, Birdseye Gr. 

 lichenoides, Meek, 1873, Ohio Pal., vol. 1, 



p. 194, Up. Held. Gr. 



FiG.516.~Stictopora 

 gilberti. Tangen- 

 tial section, show- 

 ing lunarium. 



