1899] Lambe — Canadian Paleozoic Corals. 257 



Cystiphyllum vesiculosum, Goldfuss, sp. 



Cyathophyllum vesiculosum, Goldfuss. 1826. Petref. Germ., vol. I, 

 p. 58, pi. XVII, figs. 5a-e, and pi. xviii, figs. la-d. 



Cystiphyllum cylindricum, Hall. 1843. Geol. New York, pt. IV, 

 p. 209, figs. I, 2. Non Lonsdale. 

 " vesiculosum, Milne-Edwards and Haime. 185 1. 



Polyp. Foss. Terr. Palseoz., p, 462 ; and 1853, Brit, 

 Foss. Corals, p. 243, pi. LVI, figs, i, la, ib. 



" Americanum, Milne-Edwards and Haime. 1851. 



Polyp. Foss. Terr. Palseoz., p. 464, pi. 13, figs. 4,4a. 



" Senecaense, Billings. 1859. Canad. Journ., vol. IV, 



new series, p. 137. 



" grande? ^\\\\x\^->. 1859. Ibid, p. 138. 



" Americanum, Billings. 1859. Ibid, p. 139. 



" Americaniim^^\c\\o\?>ox\. 1874. Rep. Palaeont. 



Prov. Ontario, p. '^^6, pi. VI, fig. 8 ; and C. vesiculo- 

 sum, Nicholson, 1874, ibid, p. n, fig. 8. 



" superbum, Nicholson. 1875. Palseont. Prov. On- 



tario, p. 73, pi. I, fig. I. 



" Amer-icanum, Rominger. 1876. Geol. Surv. Michi- 



gan, Fossil Corals, p. 137, pi. L, upper row and 

 right-hand half of lower row. 



Americamnn, Hall. 1876. Illustr. Devonian Fossils, 

 pi. XXVIII, figs. 1-7. 



Corallum simple, varying from turbinate to conico-cylindri- 

 cal, pointed at the base, straight or curved, flexuous or gcnicu- 

 lated, sometimes long and slender, at other times comparatively 

 short and thick. Annulated by growth expansions and con- 

 strictions, in some specimens much more pronounced than in 

 others, frequently contracted at the calicular end. Epitheca 

 complete, thin, shewing minor rings of growth, the whole marked 

 by fine transverse lines of which, in well preserved specimens, as 

 many as twenty-four can be counted in a space of 2 mm : faint 



