206 



CCELENTERATA. 



[SYR. TET. 



walled, with mural pores, and a cylin- 

 drical tube in the center of each coral- 

 lite. Type S. huronensis. 

 huronensis. Hinde, 1879, Geo. Mag., vol. 



6, p. 246, Niagara Gr. 

 SYRINGOPORA, Goldf uss, 1826, Germ. Petref., 



&. 75. [Ety. syrinx, pipe ; poros, pore.] 

 orallum aggregating, at first creeping 

 after the manner of Aulopora, then 

 sending up numerous vertical, cylin- 

 drical corrallites, usually flex nous, sub- 

 parallel, and connected laterally by 

 more or less transverse processes ; 

 septa rudimentary; tabula? close set, 

 infundibuliform ; epitheca well de- 

 veloped. Type S. reticulata. 



alectiformis, Winchell, 1866, Rep. Low. 

 Penin. Mich., p. 90, Ham. Gr. 



annulata, Rominger, 1876, Foss. Corals, 

 p. 81, Niagara Gr. 



aulopora, Salter, 1855, Belcher's Last of 

 the Arctic Voyages, vol. 2, p. 385, Car- 

 boniferous. 



cleviana, Edwards & Haime, 1851, Pol. 

 Foss. d. Terr. Pal., p. 295, Cornifer- 

 ous Gr. 



compacta, Billings, 1858, Can. Nat. and 

 Geo., vol. 3, p. 422, Up. Sil. 



crassata, Winchell, 1866, Rep. Low. Penin. 

 Mich., p. 90, Ham. Gr. 



dalmani, Billings, 1858, Can. Nat. and 

 Geo., vol. 3, p. 423, Up. Sil. 



debilis, Billings, 1858, Can. Nat. and Geo., 

 vol. 3, p. 423, Up. Sil. 



elegans, Billings, 1858, Can. Nat. and Geo., 

 vol. 3, p. 425, Corniferous Gr. 



fenestrata, Winchell, 1866. Rep. Low. 

 Penin Mich., p. 90, Ham. Gr. 



fibrata, Rominger, 1876, Foss. Corals, p. 

 82, Niagara Gr. 



harveyi, White, 1862, Proc. Bost. Soc. Nat. 

 Hist., vol. 9, p. 32, Waverly or Kinder- 

 hook Gr. : 



hisingeri, Billings, 1859, Can. Nat. and 

 Geo., vol. 4, p. 116, Corniferous Gr. 



infundibulum, see Cystostylus infundi- 

 bulum. 



intermedia, Nicholson, 1874, Rep. Pal. 

 Prov. Ont. Can., p. 126, Ham. Gr. 



laxata, Billings, 1859, Can. Jour., vol. 4, 

 p. 118, Corniferous Gr. 



maclurii, Billings, 1860, Can. 

 Jour., vol. 5, p. 258, Cor- 

 niferous Gr. 



multattenuata, McChesney, 

 1860, New Pal. Foss., p. 75, 

 and Pal. E. Neb., p. 144, 

 Coal Meas. 



multicaulis, Hall, 1852, Pal. 

 N. Y., vol. 2, p. 119, 

 Niagara Gr. 



nobilis, Billings, 1859, Can. Nat. and Geo., 

 vol. 4, p. 118, Up. Held. Gr. 



parallel:!, Etheridge, 1878, Quar. Jour. 

 Geo. Soc., vol. 34, p. 583, Up. Sil. 



perelegans, Billings, 1859, Can. Jour., vol. 

 4, p. 117, Up. Held. Gr. 



retiformis, Billings, 1858, Can. Nat. and 

 Geo., vol. 3, p. 424, Up. Sil. 



Syringopora 

 maclurii. 



reticulata, Goldfuss, 1826, Petref. Germ., 



p. 76, Devonian, 

 tabu 



ulata, Edwards & Haime, 1851, Pol. 

 Foss. des Terr. Pal., p. 288, Up. Held. Gr. 



tenella, Rominger, 1876, Foss. Corals, p. 

 81, Niagara Gr. 



tubiporoides, Yandell & Shumard, 1847, 

 Cont. to Geo. of Ky., p. 8, Corniferous Gr. 



tubiporoides, Billings, see S. maclurii. 



verneuli, Edwards & Haime, 1851, 

 Polyp. Foss. de Terr. Pal., p. 289, Cor- 

 niferous Gr. 



verticillata, Goldfuss, 1826, Petref. Germ., 



p. 76, Niagara Gr. 



TETRADIUM, Dana, 1848, Wilkes. Expl. 

 Exped. Zooph., vol. 8, p. 701. [Ety. 

 tetra, four.] Aggregate, massive, sub- 

 hemispheric ; corallites long, prismatic, 

 in close contact ; septa few, not reaching 

 the center of the visceral chamber 

 (typically four) ; tabula; numerous, 

 complete ; calices generally petaloid ; 

 no mural pores ; increase by fission. 

 Type. T. fibratum. 



FIG. 224. Tetradium flbratum. 



columnare, Hall, 1847, (Chetetes colum- 



naris.) Pal. N. Y., vol. 1, p. 68, Tren- 

 ton Gr. 

 fibratum, Safford, 



1856, Am. Jour. Sci., 



vol.22, p. 237, Hud. 



Riv. Gr. 

 fibratum var. aper- 



tum, Safford, 1856, 



Am. Jour. Sci., vol. 



22, p. 237, Hud. 



Riv. Gr. 

 fibratum var. m i - 



nus, Safford, 1856, 



Am. Jour. Sci., vol. 



22, p. 238, Hud. Riv. 



Gr. FIG. 225. Ted radium 



huronense, Billings, fibratum. Corallites 



1865, (Stenopora f^S through 



huronensis,) Pal. 



Foss., vol. 1, p. 185, Hud. Riv. Gr. 

 peachi var. canadense, Foord, 1883, Cont. 



to Micro. Pal., p. 24, Trenton Gr. 

 Tetragraptm, Salter, 1863, Quar. Jour. Geo. 



Soc., vol. 19. [Ety. tetra, four; grapho, 



I write.] This genus is not regarded 



with much favor. Graptolithus bryo- 



noides is made the typical species. G. 



quadribrachiatus is also placed in it. 



