BRYOZOA. 



Heterodictya, Nicholson, 1875, Geo. Mag., 

 vol. 2, n. s. [Ety. Jieteros, irregular; 

 dictyon, a net.] The correct ortho- 

 graphy is Heterodictyon. 

 gigantea, Nicholson, 1875, Geo. Mag., vol. 

 2, Low. Garb. [Sig. large, gigantic] 

 Hippothoa, Lamouroux, 1821, Expos, method. 



mjiata, see Alecto inflata. 

 HoKNBRA, Lamouroux, 1821, Expos, method, 

 des genres de I'Ordre des Pol. [Ety. 

 proper name.] 

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

 Niagara Gr. [Sig. divided into two; 

 forked.] 

 IcHTHYORACHis, McCoy, 1844, Garb. Foss. 

 Ireland. [Ety. ichthys, a fish ; rachis, 

 a backbone.! 

 nereis. Hall, 1874, 26th Reg. Rep., Low. 

 Held. Gr. [Ety. mythological name.] 

 Intricaria, Defrance, 1823, Dictionnaire des 

 Sciences Naturelles. [Ety. intrico, to 

 entangle.] 

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

 Trenton & Cin'ti Gr. [Sig. net- 

 worked.] 

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

 [Sig. from resemblance to a marine 

 lichen.] 

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

 Niagara Gr. [Sig. concentrically 

 wrinkled.] 

 concentrica var. parvula, Hall, 1876, 28th 

 Reg. Rep. N.Y., Niag. Gr. [Sig. small.] 

 Lyropora, Hall, 1857, Proc. Am. Assoc. Ad. 

 Sci., vol. 10. [Ety. lyra, a lute; pora, 

 a pore.] 

 lyra, Hall, 1857, Proc. Am. Ass. Ad. Sci., 

 vol. 10, Kaskaskia Gr. [Sig. a lute.] 

 quincuncialis, Hall, 1857, Proc. Am. Ass. 

 Ad. Sci., vol. 10, Kaskaskia Gr. [Sig. 

 in the form of a quincunx ; an oblique 

 arrangement.] 

 retrorsa. Meek & Worthen, 1868, Geo.Sur. 

 111., vol. 3, Burlington Gr. [Sig. 

 turned back.] 

 subquadrans, Hall, 1857, Proc. Am. Ass. 

 Ad. Sci., vol. 10, Kaskaskia Gr. [Sig. 

 somewhat square.] 

 Paleschara, Hall, 1874, 26th Reg. Rep. 

 [Sig. ancient Eschara.l 

 aspera. Hall, 1876, 28th Reg. Rep., Ni- 

 agara Gr. [Sig. rough.] 

 bifoliata. Hall, 1874, 26th Reg. Rep., Low. 



Held. Gr. [Sig. two-leaved.] 

 incrustans, Hall, 1874, 26th Reg. Rep., 

 Low. Held. Gr. [Sig. incrusting other 

 oI)jects.] 

 maculata. Hall, 1876, 28th Reg. Rep., Ni- 

 agara Gr. [Sig. spotted.] 

 oflula. Hall, 1876, 28th Reg. Rep., Niag- 

 ara Gr. [Sig. a small piece.] 

 sphserion, Hall, 1876, 28th Reg. Rep., 

 Niagara Gr. [Sig. a little ball.] 

 PHJ5NOPORA, Hall, 1852, Pal. N. Y., vol. 2. 

 [Ety. phaino, to open or make a 

 window; poms, a pore.] 

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

 Clinton Gr. [Sig. starred.] 



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



Clinton Gr. [Etv. like a sword.] 

 expansa, Hall & Whitfield, 1875, Ohio 



Pal., vol. 2, Chnton Gr. [Sig. spread 



out.] 

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



Clinton Gr. [Sig. spread out.] 

 multipora, I[all, 1851, Geo. Lake Sup. 



Land. Dist.. vol. 2, Trenton Gr. [Sig. 



having many pores.] 

 Phyllopora, King, 1849, Ann. Nat. Hist., 



2d ser., vol. 3. [Ety. phyllon, a leaf ; 



poros, a pore.] 

 ehrenbergi, Geinitz, 1846, (Gorgonia 



ehrenbergi) Grundries, Permian Gr. 



[Ety. proper name.] 

 PoLYPORA, McCoy, 1845, Carb. Foss. Ireland. 



\_Eiy . polya, many; ;x>ro8, a pore.] 

 biarmica, (?) Keyserling, 1846, Russia 



and the Ural Mts., Geinitz referred a 



form from the Coal Meas. to this 



species, and Prout referred a form 



from the Chester Gr. to it. [Sig. 



strong-jointed.] 

 elegans. Hall, 1874, 26th Reg. Rep., Low. 



Held. Gr. [Sig. elegant.] 

 gracilis, Prout, 1860, Trans. St. I^ouis 



Acad. Sci., Keokuk Gr. [Sig. slender.] 

 halliana. Prout, 1860, Trans. St. Louis 



Acad. Sci., St. Louis Gr. [Ety. proper 



name.] 

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



vol. 2, Ham. Gr. [Ety. proper name.] 



imbricata, Prout, 1866, Trans. St. Louis 

 Acad. Sci., Devonian. [Sig. imbri- 

 cated.] 



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

 Niagara Gr. [Sig. incipient.] 



intermedia, Prout, 1858, Trans. St. Louis 

 Acad. Sci., Up. Held. Gr. [Sig. inter- 

 mediate.] 



lilia. Hall, 1874, 26th Reg. Rep., Low. 

 Held. Gr. [Ety. proper name.] 



mexicana, Prout, 1858, Trans. St. Louis 

 Acad. Sci., Permian Gr. [Ety. proper 

 name.] 



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

 vol. 2, Devonian. [Ety. mythological 

 name.] 



pulchella, Nicholson, 1874, Geo. Mag. 

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

 [Sig. beautiful.] 



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

 Sci., Ham. Gr. [Sig. rigid.] 



shumardi, Prout, 1858, Trans. St. Louis 

 Acad. Sci., Up. Held. Gr. [Ety. proper 

 name.] 



stragula. White, 1874, Rep. Invert. Foss., 

 Carb. [Sig. outward covering or gar- 

 ment.] 



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

 Coal Meas. [Sig. somewhat like P. 

 marqinata.'] This species was referred 

 by Geinitz to P. marginata of McCoy. 



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

 n. s., vol. 1, Corniferous Gr. [Sig. 

 delicate.] 



