322 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Cyathophyllum marylandlcum Swartz. 



Cyathophyllum marylandicum Swartz, Maryland Geol. Surv.. Low. Dev.. 1913, 



p. 204, pi. 21, figs. 1,2. 

 Helderbergian (Keyser): Keyser, West Virginia. 



Cyathophyllum micheUni Castelnau. Not recognized. 



Cyathophyllum Michelini Castelnau, Essai Syst. Sil. I'Amerique Septent., 1843, 



p. 48, pi. 22, fig. 3. 

 Silurian: Drummond Island, Lake Huron. 



Cyathophyllum multiplicatum Owen. See Ptychophyllum expansum. 



Cyathophyllum nymphalk Billings. See Chonophylluiu nymphale. 



Cyathophyllum paslthea Billings. 



Cyathophyllum PaBithea Billings, New sp. L. Sil. Fossils, Geol. Surv. Canada, 



1865, p. 112 (adv. sheets, 1862). — Lambe, Cont. Canadian Pal., Geol. Surv. 



Canada, 4, pt. 2, 1901, p. 148, pi. 12, figs. 5, a, b. 

 Silurian: L'Anse a la Vieille, Bay of Chaleurs, Quebec. 



Cyathophyllum paticiradiatum D'Orbigny. 



Cyathophyllum pauciradiatum D'Orbigny, Prod, de Pal., 1847, p. 47. — Boule and 



Tlievenin, Ann. de Pal., 1, 1906, p. 7, pi. 3, figs. 6, 7. 

 Silurian (?): Falls of the Ohio. 



Observation. — Although considered a Silurian species and synonymous with 

 Amplexus shumardi, the figures giA'en by Boule and Thevenin refer to a 

 Devonian species of Blothrophyllum. 



Cyathophyllum pklagicum Billings. See Diplophyllum csespitosum. 



Cyathophyllum pennanti Billings. 



Cyathophyllum Pennanti Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 



107 (adv. sheets, 1862).— Lambe, Cont. Canadian Pal., Geol. Surv. Canada, 



4, pt. 2, 1901, p. 138, pi. 11, figs. 4, a, b. 

 Silurian: L'Anse a Gascon, Bay of Chaleui*s, Quebec. 



Cyathophyllum pickthorni (Salter). 



Strephodes Pickthornii Salter, Sutherland's Jour. Voyage in Baflin's Bay, etc., 



2, 1852, p. 230, pi. 6, fig. 5.— Lambe, Cruise of the "Arctic" in 1908-9, 1910, 



p. 480. 

 Cyathophyllum pickthorni ^Miller, N. A. Geol. Pal., 1889, p. 182, (gen. ref.). 

 Niagaran: Cape Riley and Beechey. Griffith's and Comwallis Islands, Arctic 



America. 



Cyathophyllum plicatum Goldfuss. Not recognized. 



Cyathophyllum plicatum Goldfuss, Petrefacta, 1826, p. 54, pi. 15, fig. 12; 2d ed., 



1862, pt. 1, p. 51.— Troost, 5th Geol. Rep. Tennessee, 1840, p. 61.— Sherzer, 



Bull. Geol. Soc. Amer., 3, 1892, p. 254. 

 Silurian? (?Devonian) : Kentucky. 



Cyathophyllum plicatulum Castelnau. Not recognized. 



Cyatliophyllum plicatulum Castelnau, Essai Syst. Sil. I'Amerique Septent., 



1843, p. 48, pi. 22, fig. 4. 

 Silurian: Dnmimond Island, Lake Huron. 



Cyathophyllum profundum Coiuud. See Streptelasma (Petraia) profundum. 



