TRO. UNI.] 



MOLL USCOIDA. 



329 



ovatipora, Hall, 1883, Rep. St. Geo., pi. 11, 



fig. 13-14, Low. Held. Gr. 

 parallela, Hall, 1883, Rep. St. Geol., pi. 11, 



fig. 13-14, Low. Held. Gr. 

 perspinulata, Hall, 1884, Rep. St. Geol., 



p. 11, Ham. Gr. 

 polygona, Hall, 1884, Rep. St. Geol., p. 9, 



Ham. Gr. 

 ponderosa, Hall, 1874, 26th Rep. N. Y. St. 



Mus. Nat. Hist., p. 106, Low. Held. Gr. 

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



151, Niagara Gr. 

 primigenia, Ulrich, 1886, 14th Rep. Geo. 



Sur. Minn., p. 97, Trenton Gr. 



FIG. 530. Arthroclenia pulchellum. a, Mag- 

 nified view. (See page 293.) 



rectilinea, Hall, 1881, Bryozoans of the 



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

 regularis, see Orthopora regularis. 

 rhombifera, see Orthopora rhombifera. 

 scutulata, see Acanthoclema scutulatum. 

 scutulata, see Orthopora scutulata. 

 signata, see Callotrypa macropora var. sig- 



nata. 

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



153, Niagara Gr. 

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



155, Niagara Gr. 

 spiculata, Hall, 1877, 1st Ed. Am. Pal. 



Foss., p. 245, Niagara Gr. 

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



155, Niagara Gr. 

 spinulosa, Hall, 1876, 28th Rep. N. Y. St. 



Mus. Nat. Hist. The name was preoc- 

 cupied. See T. spiculata. , 

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



153, Niagara Gr. 

 subimbricata, Hall, 1879, Desc. New Spec. 



Foss., p. 4, and llth Rep. Ind. Geo., p. 



234, Niagara Gr. 

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



11, Ham. Gr. 

 superba, Billings, 1866, Catal. Sil. Foss. 



Antic., p. 93, Clinton and Niagara Grs. 



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

 10, Ham. Gr. 



trans versa, Hall, 1884, Rep. St. Geol., p. 

 8, Ham. Gr. 



tuberculosa, Hall, 1852, Pal. N. Y., vol. 2, 

 p. 149, Niagara Gr. 



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

 151, Niagara Gr. 



varia, Hall, 1876, 28th Rep. N. Y. St. 

 Mus. Nat. Hist., p. Ill, Niagara Gr. 



variolata, Hall, 1876, 28th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 113, Niagara Gr. 



vesiculosa, Winchell, 1863, Proc. Acad. 

 Nat. Sci., p. 3, Burlington Gr. 



whitfieldi, Ulrich, 1883, Jour. Gin. Soc. 



Nat. Hist., vol. 6, p. 262, Niagara Gr. 

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

 p. 71. [Ety. tropis, keel ; poros, pore.] 

 Ramose, solid, cells in irregular longi- 

 tudinal rows, separated by sinuous 

 ridges; peristomes thin, slightly ele- 

 vated. Type T. nana. 



nana, Hall, 1887, Pal. N. Y., vol. 6, p. 71, 



Up. Held. Gr. 



Tuberculopora, Ringueberg, 1886, Bull. Buf. 

 Soc. Nat. Sci., vol. 5, p. 21. Not prop- 

 erly defined. 



inflata, Ringueberg, 1886, Bull. Buf. Soc. 

 Nat. Sci., vol. 5, p. 21. Not properly 

 defined. 



UNITRYPA, Hall, 1885, Rep. St. Geol., p. 36. 

 [Ety. unus, one ; trupa, perforation.] 

 Form like Fenestella, having the 

 branches connected by dissepiments ; 

 cell apertures, in two ranges, separated 

 by carinae, which are elevated, widened 

 at the summit, and connected by thin, 

 lateral processes or scalse more or less 

 numerous. Type U. lata. 



acaulis, Hall, 1881, 

 (Fenestella acau- 

 lis,) Bryozoans 

 of Up. Held. Gr., 



&, 33, and Pal. 

 . Y., vol. 6, p. 

 131, Up. Held. Gr. D 

 acaulis var. in- S 

 clinis, Hall, 1887, 



6 * p. ' 1 32',' Up! Fia - 531.-Uaitrypa lata 



Held. Gr. 

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



138, Up. Held. Gr. 

 biserialis, Hall. 1882, (Fenestella bise- 



rialis,) Rep. St. Geol. and Pal. N. Y., vol. 



6, p. 57, Low. Held. Gr. 

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



p. 17, Up. Held. Gr. 

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



p. 142, Up. Held. Gr. 

 elegantissima, Hall, 1881, (Fenestella 



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



p. 36, and Pal. N. Y., vol. 6, p. 140, Up. 



Held. Gr. 

 fastigata, Hall, 1881, (Fenestella fastigata,) 



Trans. Alb. Inst., vol. 10, p. 36, and 



Pal. N. Y., vol. 6, p. 141, Up. Held. Gr 

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



137, Up. Held. Gr. 



