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 michelini Castelnau. Not recognized. 



Gyathophyllum Michelini Castelnau, Essai Syst. Sil. 1'Amerique Septent., 1843, 



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

 Silurian: Drummond Island, Lake Huron. 



CYATHOPHYLLUM MULTIPLICATUM Owen. See Ptychophyllum expansum. 

 CYATHOPHYLLUM NYMPHALE Billings. See Chonophyllum nymphale. 



Cyathophyllum paslthea Billings. 



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



1865, p. 112 (adv. sheets, 1862). Lambe, Cont. Canadian Pal., Geol. Sun-. 



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

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



Cyathophyllum pauciradiatum D'Orbigny. 



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



Thevenin, 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 given by Boule and Thevenin refer to a 

 Devonian species of Blothrophyllum. 



CYATHOPHYLLUM PELAGICUM Billings. See Diplophyllum csespitosum. 



Cyathophyllum pennant! 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 Chaleurs, Quebec. 



Cyathophyllum pickthorni (Salter). 



Strephodes Pickthornii Salter, Sutherland's Jour. Voyage in Baffin'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 Cornwallis 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. 



Cyathophyllum plicatulum Castelnau, Essai Syst. Sil. 1'Amerique Septent., 



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

 Silurian: Drummond Island, Lake Huron. 



OYATHOPHYLLUM PROFUNDUM Conrad. See Streptelasma (Petraia) profundum. 



