816 



MOLLUSCOIDA. 



FIG. 500. Polypora 

 biseriata. Aper- 



central perfora 

 tion of the cover 

 closed, x 50. 



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

 111., vol. 8, pi. 61, Kaskaskia Gr. 



arkonensis, S. A. Miller, 1883, 2d ed. Am. 

 Pal. Foss., p. 292, Ham. Gr. Proposed 

 instead of P. tuberculata, Nicholson, in 

 Geo. Mag. for April, 1874, and Rep. Pal. 

 Prov. Ont., p. 100, tigs. 37, a, b, c. 

 Found at Arkona, township of Bosan- 

 quet, Canada. 



arta, Hall, 1879, (Fenestella arta,) 32d 

 Rep. N. Y. St. Mus. Nat. Hist., p. 163, 

 Low. Held. Gr. 



biarmica, Keyserling, 1846, Geognost. 

 Beobacht, p. 191. Geinitz referred a 

 form from the Coal Meas., and Prout 

 referred one from the Kaskaskia Gr. to 

 it. Probably not an American species, 

 biseriata, Ulrich, (in 

 press,) Geo. Sur. 111., 

 vol. 8, pi. 60, Warsaw 

 and St. Louis Gr. 

 blandida, Ulrich, 1886, 

 Contri. to Amer. Pal., 

 p. 18, Up. Held. Gr. 



*"l!j 1 i av l?*l t e brevisulcata, Hall, 1881, 

 (Fenestella brevisul- 

 cata, )Trans. Alb. Inst., 

 vol. 10, p. 26, and Pal. 

 N. Y., vol. 6, p. 168, Up. Held. Gr. 



burlingtonensis, Ulrich, (in press,) Geo. 

 Sur. 111., vol. 8, pi. 59, Burlington Gr. 



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

 153, Up. Held. Gr. 



celsipora, Hall. 1881, (Fenestella celsi- 

 pora,) Trans. Alb. Inst., vol. 10, p. 24, 

 and Pal. N. Y., vol. 6, p. 150, Up. 

 Held Gr. 



celsipora var. minima, Hall, 1881, (Fen- 

 estella celsipora var. minima,) Trans. 

 Alb., Inst., vol. 10, p. 24, and Pal. N. 

 Y., vol. 6, p. 151, Up. Held. Gr. 



celsipora var. minor, Hall, 1881, (Fenes- 

 tella, celsipora var. minor,) Trans. Alb. 

 Inst., vol. 10, p. 24, and Pal. N. Y., vol. 

 6, p. 151, Up. Held. Gr. 



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

 111., vol. 8, pi. 60, Kaskaskia Gr. 



compacta, Hall, 1879, (Fenestella com- 

 pacta,) 32d Rep. N. Y. St. Mus. Nat. 

 Hist., p. 163, Low. Held. Gr. 



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

 111., vol. 8, pi. 60, Kaskaskia Gr. 



compressa, Hall, 1879, (Fenestella Com- 

 pressa,) 32d Rep. N. Y. St. Mus. Nat. 

 Hist., p. 164, Low. Held. Gr. 



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

 vol. 8, pi. 61, Kaskaskia Gr. 



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

 p. 170, Up. Held. Gr. 



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

 vol. 8, pi. 61, Up. Coal Meas. 



cultellata, Hall, 1881, (Fenestella cultel- 

 lata,) Trans. Alb. Inst., vol. 10, p. 21, and 

 Pal. N. Y., vol. 6, p. 160, Up. Held. Gr. 



distans, Hall, 1881, (Fenestella distans,) 

 Trans. Alb. Inst., vol. 10, p. 24, and Pal. 

 N. Y., vol. 6. p. 161, Up. Held. Gr. 



elegans, Hall, 1S74, 26th Rep. N. Y. St. 

 Mus. Nat. Hist, p. 97, Low. Held. Gr. 



elongata, Hall, 1882, Rep. St. Geol- 

 and Pal. N. Y., vol. 6, p. 153, Up- 

 Held. Gr. 



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



58, Low. Held. Gr. 



fistulata, Hall, 1884, (Fenestella fistulata,) 

 36th Rep. N. Y. St. Mus. Nat. Hist., p. 



59, Ham. Gr. 



flabelliformis, Hall, 1881, (Fenestella fla- 



belliformis.) Trans. Alb. Inst., vol. 10, 



p. 23, and Pal. N. Y., vol. 6, p. 161, Up. 



Held. Gr. 

 gracilis, Prout, 1860, Trans. St. Louis 



Acad. Sci., p. 580, Warsaw Gr. 

 grandis, Toula, 1875, N. Jahrbuch, p. 230, 



Carboniferous, 

 granilinea, Hall, 1881, (Fenestella grani- 



linea,) Trans. Alb. Inst., vol. 10, p. 27, 



and Pal. N. Y., vol. 6, p. 154, Up. 



Held. Gr. 

 hallana, Prout, 1860, Trans. St. Louis 



Acad. Sci., vol. 1, p. 580, Warsaw Gr. 

 hamiltonensis, Prout, 1866, Geo. Sur.. 111., 



vol. 2, p. 423, Ham. Gr. 

 hexagonalis, Hall, 1881, (Fenestella hex- 



agonalis,) Trans. Alb. Inst., vol. 10, p. 



27, and Pal. N. Y., vol. 6, p. 164, Up. 



Held. Gr. 

 hexagonalis var. foraminulosa, Hall, 1881, 



(Fenestella hexagonalis var. foraminu- 

 losa,) Trans. Alb. Inst., vol. 10, p. 27, 



and Pal. N. Y., vol. 6, p. 165, Up. 



Held. Gr. 

 idothea, Hall, 1879, (Fenestella idothea,) 



32d Rep. N. Y. St. Mus. Nat. Hist, p. 97, 



Low. Held. Gr. 

 imUricata, Prout, 1866, Trans. St. Louis 



Acad. Sci., vol. 2, p. 412, Devonian. 

 impressa,Ulrich, 1888, Bull. DenisonUniv., 



vol. 4, p. 72, Cuyalioga Shale, 

 incepta, Hall, 1852, Pal. N. Y., vol. 2, p. 



167, Niagara Gr. 

 intermedia, Prout, 1858, Trans. St. Louis 



Acad. Sci., vol. 1, p. 272, Up. Held Gr. 

 laevinodata, Hall, 1881, (Fenestella Isevi- 



nodata,) Trans. Alb. Inst., vol. 10, p. 28, 



and Pal. N. Y., vol. 6, p. 169, Up. 



Held. Gr. 

 Ijevistriata, Hall, 1883, Rep. St. Geol. and 



Pal. N. Y., vol. 6, p. 159, Up. Held. Gr. 

 largissima, Hall, 1881, (Fenestella largis- 



sima), Trans. Alb. Inst., vol. 10, p. 22, 



and Pal. N. Y., vol. 6, p. 156, Up. 



Held. Gr. 

 liljea, Hall, 1874,26th Rep. N. Y. St. Mus. 



Nat. Hist., p. 62, Low. Held. Gr. 

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



111., vol. 8, pi. 59. Keokuk Gr. 

 megastoma, DeKoninck, 1863, Quar. Jour. 



Geo. Soc., vol. 19, p. 5, Carboniferous, 

 mexicana, Prout, 1858, Trans. St. Louis 



Acad. Sci., vol. 1, p. 270, Permian Gr. 

 mutabilis, Hall, 1881, (Fenestella muta- 



bilis,) Trans. Alb. Inst,, vol. 10, p. 25, 



and Pal. N. Y., vol. 6, p. 166, Up. 



Held. Gr. 

 nexa, Hall, 1881, (Fenestella nexa,) Trans. 



Alb. Inst., vol. 10, p. 25. and Pal. N. Y., 



vol. 6, p. 165, Up. Held. Gr. 



