192 



CCELENTERATA. 



FIG. 181. Heliolites inter- 

 stinctus. 



larger ones cylindrical, with twelve in- 

 foldings of the wall or septa, not reach- 

 ing the center, the smaller ones 

 polygonal, investing the larger ones ; 

 walls amalgamated ; tabulae numer- 

 ous; no columella. Type H. inter- 

 stinctus. 



affinis, Billings, 1865, Can. Nat. and Geo., 

 2d ser., vol. 2, p. 427, Hud. Riv. and 

 Mid. Sil. 

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



130, Niagara Gr. 



exiguus, Billings, 1865, Can. Nat. and 

 Geo., 2d ser., vol. 2, p. 428, Mid. Sil. 

 inters tinctus, 

 L i n n se u s, 

 1767, (Madre- 

 ppra inter- 

 stincta,) Syst. 

 Nat, 12th Ed., 

 p. 1276, Ni- 

 agara Gr. 

 m acrostylus, 

 Hall, 1852, 

 Pal. N. Y., 

 vol. 2, p. 135, 

 Niagara Gr. 

 rnegastoma, McCoy, 1846, Sil. Foss. of 



Ireland, p. 62, Niagara Gr." 

 pyriformis, Guettard, 1770, Mem. 3, p. 454, 

 and Pal. N. Y., vol. 2, p. 133, Ni- 

 agara Gr. 

 sparsus, Billings, 1865, Can. Nat. and Geo., 



2d ser., vol. 2, p. 428, Mid. Sil. 

 speciosus, Billings, 1865, Can. Nat. and 



Geo., 2d ser., vol. 2, p. 426, Mid. Sil. 

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



p. 131, Niagara Gr. 



subtubulatus, McCoy, as identified by 

 Rominger, 1876, Foss. Corals, p. 13, 

 Niagara Gr. 

 tenuis, Billings, 1865, Can. Nat. and Geo., 



2d ser., vol. 2, p. 428, Mid. Sil. 

 HELIOPHYLLUM, Hall, 1848, in Dana. Zooph., 

 p. 356. [Ety. helios, sun ; phyllon, leaf.] 

 Corallum simple ; septa well developed 

 and producing lateral lamellar pro- 

 longations, which extend from the wall 

 toward the center of the visceral cham- 

 ber, so as to represent ascending arches 

 and to constitute irregular central tabulae, 

 and which are united toward the cir- 

 cumference by means of vertical dis- 

 sepiments. Type H. halli. 

 acuminaturn, Hall, 1882, Foss. Corals 

 Niagara and Up. Held. Grs., p. 46, and 

 12th Rep. Ind. Geo., p. 310. Up. 

 Held. Gr. 



sequale, Hall, 1882, Foss. Corals Niagara 

 and Up. Held. Grs., p. 47, and 35th 

 Rep. N. Y. St. Mus. Nat. Hist., p. 451, 

 Up. Held. Gr. 



sequum, Hall, 1882, Foss. Corals Niagara 

 and Up. Held. Grs., p. 51, and 12th 

 Rep. Ind. Geo., p. 314, Up. Held. Gr. 

 alternatum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 45, and 

 12th Rep. Ind. Geo., p. 305, Up. 

 Held. Gr. 



annulatum. Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 48, and 

 12th Rep. Ind. Geo., p. 307, Up. 

 Held. Gr. 



arachne, Hall, 1876, Illust. Dev. Foss., pi. 



24, Ham. Gr. 



campaniforme, Hall, 1882, Foss. Corals 

 Niagara and Up. Held. Grs., p. 53, and 

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

 457, Up. Held. Gr. 



canadense, Billings, 1859, Can. Jour., vol., 

 4, p. 125, Up. Held. Gr. 



cancellatum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 53, and 

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

 457, Up. Held. Gr. 



cayugaense, Billings, 1859, Can. Jour., vol. 

 4, p. 124, Up. Held. Gr. 



colbornense, Nicholson, 1875, Can. Nat. 

 and Geo., vol. 7, p. 143, Up. Held. 

 Gr. 



colligatum, Billings, 1859, Can. Jour., vol. 



4, p. 126, Up. Held. Gr. 

 compactum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 48, and 12th 

 Rep. Ind. Geo., p. 308, Up. Held. Gr. 



conflueris, Hall, 1876, Illust. Dev. Foss., 



pi. 26 and 27, Ham. Gr. 

 degener, Hall, 1876, Illust. Dev. Foss., pi. 



25, Ham. Gr. 



dentatum, Hall, 1882, Foss. Corals Niagara 

 and Up. Held. Grs., p. 48, and 35th Rep. 

 N. Y. St. Mus. Nat. Hist., p. 452, Up. 

 Held. Gr. 



denticulatum, Hall, 1882, Foss. Corals Ni- 

 agara and. Up. Held. Grs., p. 52, and 

 12th Rep. Ind. Geo., p. 313, Up. 

 Held. Gr. 



dentiliiieatum, Hall, 1882, Foss. Corals 

 Niagara and Up. Held. Grs., p. 13, and 

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

 417, Niagara Gr. 



distans, Hall, 1882, Foss. Corals Niagara 

 and Up. Held. Grs., p. 50, and 12th 

 Rep. Ind. Geo., p. 308, Up. Held. Gr. 



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

 p. 124, Corniferous Gr. 



exiguum, Billings, 1860, Can. Jour., vol. 



5, p. 261, Corniferous Gr. 

 fasciculatum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 48, and 

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

 452, Up. Held. Gr. 



fecundum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 49, and 

 12th Rep. Geo. Ind., p. 309, Up. 

 Held Gr. 



fissuratum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 53, and 

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

 457, Up. Held. Gr. 



gemmatum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 49, and 

 12th Rep. Geo. Ind., p. 310, Up. 

 Held Gr. 



gemmiferum, Hall, 1882, Foss. Corals Ni- 

 agara and Up. Held. Grs., p. 13, and 35th 

 Rep. N. Y. St. Mus. Nat. Hist., p. 417, 

 Niagara Gr. 



