BIBLIOGKAPHIC LIST OF GENERA AND SPECIES. 17 



Actlnopterla dlspar Williams. 



Actinopteria dispar Williams, Proc. IT. S. Nat. Miis., 45, 1913, p. 343, pi. 30, 



figs. 20, 21. 

 Silurian (Pembroke): Leighton Cove, Washington County, Maine. 

 Coty pes. —CB.t. No. 58966, U.S.N.M. 



AiTiNopTERiA EMACERATA Wliitfield and Hovey. See Pterinea emacerata. 



Actinopteria fornicata Williams. 



Actinopteria fornicata Williams, Proc. U. S. Nat. Mus., 45, 1913, p. 343, pi. 30, 



figs. 14-16. 

 Silurian (Pembroke): Youngs Cove, Washington County, Maine. 

 Holotijpe.— Cat. No. 58965, U.S.N.M. 



Actinopteria reticulata Weller. 



Actinopteria reticulata Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 245, pi. 



22, fig. 3.— Maynard, Maryland Geol. Surv., Low. Dev., 1913, p. 459, pi. 76, 



fig. 6. 

 Helderbergian : Near Tri States, New York (Decker Ferry); Keyser, West Virginia 



(Keyser). 



AcTiNOSTOMA Young and Young. See P'enestella Lonsdale. 



ACTINOSTROMA Nicholson. Genotype: A. clathratum Nicholson. 



Actinostroma Nicholson, Mon. British Strom., Pal. Soc, 1886, p. 75. — Uhich, 



Geol. Surv. Illinois, 8, 1890, p. 221.— Pocta, Syst. Sil. Centre Boheme, 8, pt. 



1, 1894, p. 142.— Zittel-Eastman Textb. Pal., 1, 1900, p. 112; 2d ed., 1913, p. 



122. 



Actinostroma franldincnse Parks. 



Clathrodictyon franklinense Ami., Cruise of the "Neptune," 1906, p. 329 (nom. 

 nud.). Actinostroma franklinense Parks, Univ. Toronto Studies, Geol. Ser. No. 6, 



1909, p. 27, pi. 19, figs. 3, 4. 

 Niagaran: Beechy Island, Lancaster Sound, Canada. 



Actinostroma inflectum Parks. See Actinostroma tenuifilatum inflecturn. 



Actinostroma matutinum Nicholson. 



Actinostroma matutinum Nicholson, Ann. Mag. Nat. Hist., 6th ser., 7, 1891, p. 322, 

 pi. 9, figs. 1, 2.— Whiteaves, Canadian Kec. Sci., 7, 1895, p. 134.— Parks, 

 Univ. Toronto Studies, 'Geol. Ser., No. 5, 1908, p. 14. 

 Silurian: L'Anse au Gascon, Baie de Chaleur, Quebec. 



Actinostroma tenuifilatum Parks. 



Actinostroma tenuifilatum Parks, Univ. Toronto Studies, Geol. Ser., No. 5, 1908, 



p. 10, pi. 9, figs. 1-3; Ibid., No. 6, 1909, p. 25. 

 Niagaran: Ann Arbor, Michigan (drift); Drummonds Island, Lake Huron, Pagwa- 



chuan River, and Southampton Island, Hudson Bay, Canada. 

 Cotypes. —Csit. Nos. 36828, 36829, U.S.N.M. 



Actinostroma tenuifilatum cylindricum Parks. 



Actinostroma tenuifilatum var. cylindricum Parks, ITniv. Toronto Studies, Geol. 



Ser., No. 6, 1909, p. 26. 

 Niagaran: Southampton Island, Hudson Bay. Canada. 



Actinostroma tenuifilatum inflectum Parks. 



Actinostroma inflectum Parks, Ottawa Nat., 22, 1898, p. 27; Univ. Toronto 

 Studies, Geol. Ser., No. 5, 1908, p. 11. 



84243°— Bull. 92—15 2 



