PRI. PRO.] 



MOLLUSC01DA. 



317 



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



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

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



64, Low. Held. Gr. 



papillata, McCoy, 1862, Garb. Foss. of Ire- 

 land, p. 226, Up. Coal Meas. 

 paxillata, Hall, 1879, (Fenestella paxillata,) 



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



164, Low. Held. Gr. 

 perangulata, Hall, 1881, (Fenestella per- 



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



23, and Pal. N. Y., vol. 6, p. 162, Up. 



Held, Gr. 

 perundata, Hall, 1881, (Fenestella perun- 



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



and Pal. N. Y., vol. 6, p. 163, Up. 



Held. Gr. 

 porosa, Hall, 1881, (Fenestella porosa,) 



Trans. Alb. Inst., vol. 10, p. 26, and Pal. 



N. Y., vol. 6, p. 163, Up. Held. Gr. 

 propria, Hall, 1881, (Fenestella propria,) 



Trans. Alb. Inst., vol. 10, p. 22, and Pal. 



N. Y., vol. 6, p. 157, Up. Held. Gr. 

 (?) psyche, Billings, 1874, Pal. Foss., vol. 2, 



p. 11, Gaspe limestone No. 8, Devonian, 

 pulchella, Nicholson, 1874, Geo. Mag. 



Lond. n. s., vol. 1, p. 161, Corniferous Gr. 

 quadrangularis, Hall, 1881, (Fenestella 



quadrangularis,) Trans. Alb. Inst., vol. 



10, p. 21, and Pal. N. Y., vol. 6, p. 158, 



Up. Held. Gr. 

 radialis, Ulrioh, (in press,) Geo. Sur. 111., 



vol. 8, pi. 60, Keokuk Gr. 

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



vol. 8, pi. 59, Keokuk Gr. 

 rigida, Prout, 1866, Trans. St. Louis Acad. 



Sci., vol. 2, p. 412, Up. Held. Gr. 

 rigida, Hall, 1881, (Fenestella rigida,) 



Trans. Alb. Inst., vol. 10, p. 22, and Pal. 



N. Y., vol. 6, p. 155, Up. Held. Gr. 

 robusta, Hall, 1881, (Fenestella robusta,) 



Trans. Alb. Inst., vol. 10, p. 22, and Pal. 



N. Y., vol. 6, p. 156, Up. Held. Gr. 

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



169, Up. Held. Gr. 

 separata, Hall, 1882, Rep. St. Geol. and 



Pal. N. Y., vol. 6, p. 166, Up. Held. Gr. 

 shumardi, Prout, 1858, 

 Trans. St. Louis Acad. 

 Sci., vol.1, p. 271, Up. 

 Held. Gr. 

 simulatrix, Ulrich, (in 



P ress >) Geo ' Sur " I1L 

 vol. 8, pi. 59, Keokuk 



Gr. 



spinulifera, Ulrich, (in 

 press,) Geo. Sur. 111., 



vo1 - 8. Pi- 61 > Kaskas- 

 kia and Coal 



Meas. 

 stragula, White, L874, 



Rep. Invert. Foss., p. 



19, and Geo. Sur. W. 



100th Mer. vol. 4, p. 



108, Coal Meas. 

 striatopora, Hall, 1881, 

 (Fenestella striatopora,) Trans. Alb. 

 Inst., vol. 10, p. 23, and Pal. N. Y., vol. 

 6, p. 168, Up. Held. Gr. 



PIG. 501. Polypora 

 shumardi. En- 

 larged. 



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

 59, Low. Held. Gr. 



submarginata, Meek, 1872, Pal. E. Neb., 

 p. 154, Coal Meas. 



submutans, Hall, 1881, (Fenestella sub- 

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

 21, and Pal. N. Y., vol. 6, p. 167, Up. 

 Held. Gr. 



tenella, Nicholson, 1874, Geo. Mag. Lond. 

 n. s., vol. 1, p. 162, Corniferous Gr. 



transversa, Ulrich, 1886, Cont. to Am. Pal., 

 p. 18, Up. Held. Gr. 



tuberculata, Prout, 1859, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 449, Kaskaskia Gr. 



tuberculata, Nicholson, see P. arkonensis. 



varsoviensis, Prout, 1858, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 237, Warsaw Gr. 



varsoviensis var. spininodata, Ulrich, (in 

 press,) Geo. Sur. 111., vol. 8, pi. 60, War- 

 saw Gr. 



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

 vol. 8, pi. 62, Coal Meas. 



whitii var. exitnia, Ulrich, (in press,) Geo. 



Sur. 111., vol. 8, pi. 62, Coal Meas. 

 PRISMOPORA, Hall, 1881, Bryozoans of the 

 Up. Held. Gr., p. 17. [Ety. prismos, the 

 hole made by a cylindrical saw ; poros, 

 pore.] Ramose, branches triangular, 

 dichotomous, each side celluliferous ; 

 tubes radiate from the center to each 

 angle, margins noncelluliferous ; inter- 

 stitial spaces smooth, vesicular. Type 

 P. triquetra. 



dilatata, Hall, 1884, Rep. St. Geol., p. 50, 

 Ham. Gr. 



lata, Hall, 1887, Pal. N. Y., vol. 6, p. 266, 

 Ham. Gr. 



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

 vol. 8, pi. 78, Coal Meas. 



paucirama, Hall, 1881, Bryozoans of the 

 Up. Held. Gr., p. 17, and Rep. St. Geol., 

 1883, pi. 25, fig. 11, Up. Held. Gr. 



serrata, Meek, 1875, (Ptilodictya serrata,) 

 Pal. Ohio, vol. 2, p. 327, Coa'l Meas. 



serrulata, Ulrich, 1884, Jour. Cin. Soc. 

 Nat. Hist., vol. 7, p. 41, Kaskaskia Gr. 

 Perhaps the same as P. serrata. 



sparsipora, Hall, 1881, (Thallostigma spar- 

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

 13, and Pal. N. Y., vol. 6, p. 288, Up. 

 Held. Gr. 



triquetra, Hall, 1881, Bryozoans of the 

 Up. Held. Gr., p. 17, and Rep. St. Geol. 

 1883, pi. 25, fig. 8-10, Up. Held. Gr. 

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

 111., vol. 8, p. 369. [Ety. protos, first; 

 Crisina, a genus.] Ramose, celluliferous 

 on one side only; cells subtubular, 

 with prominent circular apertures ; re- 

 verse finely grano-striate ; small pores, 

 apparently communicating with the in- 

 terior of the zoo3cia, are rather irregu- 

 larly distributed over both sides of the 

 branches ; axis thin, cruciform in trans- 

 verse section; external walls thick. 

 Type P. exigua. 



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

 vol. 8, pi. 29 and 53, Trenton and Hud. 

 Riv. Gr. 



