DIP. FAV.] 



CCELENTERATA. 



187 



foliosus, Emmons, 1856, Am. Geo., p. 105, 

 Up. Tacpnic. 



folium, Hisinger, 1837, (Prionotus 

 folium,) Leth. Suec., p. 113, 

 Hud. Riv. Gr. 



hudsonicus, Nicholson, 1875, Pal. 

 Proc. Ont., p. 38, Hud. Riv. Gr. 

 hypniformis, White, 1874, (Grap- 

 tolithus hypniformis,) Rep. In- 

 vert. Foss., p. 12, and Geo. Sur. 

 W. 100th Mer., vol. 4, p. 63, 

 Trenton Gr. 



inutilis, Hall, 1865, Can. Org. Rem., De- 

 cade 2, p. Ill, Quebec Gr. 



laciniatus, Emmons, 1856, Am. Geo., p. 

 236, Up. Taconic. 



marcidus, Hall, 1859, (Graptolithus mar- 

 cidus,) Pal. N. Y., vol. 3, p. 514, Hud. 

 Riv. Gr. 



mucronatus, Hall, 1847, (Graptolithus 

 mucronatus,) Pal. N. Y., vol. 1, p. 263, 

 Hud. Riv. Gr. 



obliquus, Emmons, 1856, Am. Geo., p. 

 106, Up. Taconic. 



peosta, Hall, 1861, (Graptolithus peosta,) 

 Geo. Rep. Wis., p. 17, Trenton Gr. 



pristiniformis, Hall, 1858, (Graptolithus 

 pristiniformis,) Geo. Sur. Can., p. 133, 

 and Can. Org. Rem., Decade 2, p. 110, 

 Quebec Gr. 



pristis, (?) Hisinger, 1837, (Prionotus 

 pristis,) Leth Suec., p. 114, and Pal. N. 

 Y., vol. 1, p. 265, Hud. Riv. Gr. 



putillus, Hall, 1865, Can. Org. Rem., De- 

 cade 2, p. 44, Hud. Riv. Gr. 



rugosus, Emmons, 1856, Am. Geo., p. 105, 

 Up. Taconic. 



rectangularis, McCoy, 1851, Brit. Pal. 

 Rocks, p. 3, Low Sil. 



secalinus, Hall, 1847, (Fucoides secalinus,) 

 Pal. N. Y., vol. 1, p. 267, syn. for D. 

 simplex. 



simplex, Emmons, 1844, (Fucoides sim- 

 plex,) Taconic system, p. 27, and Pal. 

 N. Y., vol. 1, p. 267, Up. Taconic. 



spinulosus, Hall, 1859, (Graptolithus 

 spinulosus,) Pal. N. Y., vol. 3, p. 517, 

 Hud. Riv. Gr. 



whitfieldi, Hall, 1859, (Graptolithus whit- 

 fieldi,) Pal. N. Y., vol. 3, p. 516, Hud. 

 Riv. Gr. 



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

 p. 115, syn. for Diphyphyllum. 



csfspitosum, see Diphyphyllum caespitosum. 



coralliferum, see Diphyphyllum coral- 



liferum. 



DIPLOTRYPA, Nicholson, 1879, Pal. Tab. 

 Corals, p. 292. [Ety. diploos, double; 

 trypa, hole.] Corallites of two kinds, 

 the larger thin walled, polygonal, 

 tabulae remote ; often aggregated in 

 clusters, (monticules); smaller coral- 

 lites angular, thin walled, never com- 

 pletely isolating the larger ones ; tabulae 

 numerous. Type D. petropolitana. 



infida, Ulrich, 1886, 14th Rep. Geo. Sur. 

 Minn., p. 88, Trenton Gr. 



milleri, Ulrich, 1882, Jour. Gin. Soc. Nat. 

 Hist., vol. 5, p. 245, Niagara Gr. 



FIG. 172. 



regularis, Foord, 1883, Micropalaeontology, 



p. 13, Trenton Gr. 



DISCOPHYLLUM, Hall, 1847, Pal. N. Y., vol. 

 1, p. 277. [Ety. diskos, disk; phyllon, 

 leaf.] Discoid flattened, rays numer- 

 ous, proceeding from the center and 

 terminating in a thickened border. 

 Type D. peltatum. 



peltatum, Hall, 1847, Pal. N. Y., vol. 1, p. 



277, Up. Tacpnic. 



DUNCANEI/LA, Nicholson, 1874, Ann. Mag. 

 Nat. Hist., 4th ser., vol. 13, p. 333. [Ety. 

 proper name.] Corallum 

 simple, obconical ; calycle 

 deep, circular; rays strong, 

 exsert ; epitheca striated 

 vertically ; closely allied to 

 Streptelasma. Type D. 

 borealis. 



bo real is, Nicholson, 1874, 

 Ann. Mag. Nat. Hist., 4th 

 ser., vol. 13, p. 333, Ni- 

 agara Gr. 



ELASMOPHYLLUM, Hall, 1882, 

 Foss. Corals Niagara and 

 Up. Held Grs., p. 38. [Ety. 

 elasma, lamellae ; phyllon, 

 leaf.] Simple, turbinate, is 



lamellae extending to the magnified, 

 center, twisted or not ; in- 

 terlamellar cysts continuing to the cen- 

 ter ; no tabulse. Type E. attenuatum. 



attenuatum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 38, and 

 35th Rep. N. Y. St. Mus. Nat, Hist., p. 

 442, Up. Held. Gr. 



EMMONSIA, Edwards & Haime, 1851, Mono- 

 graphic des Polyp., Foss. des Terr. 

 Palaeoz., p. 246. [Ety. proper name.] 

 Distinguished from Favosites by the 

 compound character of the diaphragms, 

 but generally regarded as a synonym. 

 Type E. hemispherica. 



hemispherica, Troost, 1840, (Calamopora 

 hemispherica.) 5th Rep. Geo. Tenn., p. 

 72, Up. Held. Gr. 



hemispherica, Yandell & Shumard, 1847, 

 (Favosites hemisphericus,) Contrib. to 

 Geo. of Ky., p. 7. Same species de- 

 scribed by Troost. 



Eiidophyllum, Edwards & Haime, 1850, Brit. 

 Foss Corals, p. Ixxi, syn. for Diphy- 

 phyllum. 



rugosum, see Diphyphyllum rugosum. 



simcoewe, see Diphyphyllum simcoense. 



strictum, see Diphyphyllum strictum. 



vennori, see Diphyphyllum vennori. 



verneuilanum, see Diphyphyllum, verneui- 



lanum. 



Favastrea, DeBlainville, 1830, Man. d. Actinol, 

 p. 374. Not an American palaeozoic 

 genus. 



striata, D'Orbigny, 1850, Prodr. d. Pale- 

 ont., 1. 1, p. 48. Not denned so as to be 

 recognized. 



Faviphyllum, as used by Hall, 1852, Stans. 

 Exped. to Great Salt Lake, p. 407. 

 Not denned, and founded upon a sili- 

 cifled, indeterminate fragment. 



