BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 425 



DIctyonema murrayl Hall. 



Dictyonema murrayi Ilall, Canadian Org. Rem., Geol., Surv. Canada, dec. 2, 1865, 



p. 138, pi. 20, figs. 6, 7.— Ruedemann, Mem. New York State Mus., 7, pt. 1, 



1904, p. 606, pi. 3, fig. 12. 

 Canadian: Point Levis, Quebec (Levis, C'lonograptua zone), Rensselaer County, 



New York (Deepkill). 

 Plesiotype.— Gat. No. 54287, U.S.N.M. 



Dictyonema murrayl tarljense Hoek. 



Dictyonema murrayi var. tarijense Hoek, Neuea Jahrb. Min., Geol., Pal., 34, 1912, 



p. 224, pi. 12. figs. 1. 2. 

 Lowest Ordovlcian: Tarija, Bolivia. 



Dictyonema neenah Hall. 



Dictyonema neenah Hall, Rep. Geol. Surv. Wisconsin, 1861, p. 7; 20th Rep. New 

 York State Cab. Nat. Hist., 1878, p. 225.— Pocta, Syst. Sii. Centre Boheme, 

 8, 1894, p. 193.— Whitfield, Mem. Amer. Mus. Nat. Hist., 1, pt. 2, 1895, pi. 5. 

 fig. 13, p. 47.— Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, p. 150. 



Black River (Platteville): Fox River, near Appleton, Wisconsin. 



Dictyonema norvegicum Kjerulf. See Dictyonema flabelliforme. 



Dictyonema obovatum Gurley. 



Dictyonema obovatum Gurley, Ann. Rep. Geol. Surv. Arkansas, 1890, 3, 1892, 



p. 418; Jour. Geol., 4, 1896, p. 300.— Ruedemann, Mem. New York State 



Mus., 11, pt. 2, 1908, p. 151. 

 Chazyan (Normansldil-Stringtown): Near Crystal Springs, Arkansas. 



Dictyonema parallelum Gurley. 



Dictyonema parallelum (Gurley MS.) Bassler, Bull. U. S. Nat. Mus., 65, 1909, 



pp. 37, 38, pi. 4, fig. 2, text fig. 47. 

 Niagaran dolomite: Hamilton, Ontario. 



Dictyonema percrassum Gurley. 



Dictyonema percrassus (Gurley MS.) Bassler, Bidl. IT. S. Nat. Mus., 65, 1909, 



pp. 35, 36, figs. 44, 45. 

 Niagaran dolomite: Hamilton, Ontario. 



Dictyonema perexile Gurley. 



Dictyonema delicatulum Dawson (not Lapworth), Canadian Nat. Geol., 10, 1883, 



p. 461 (footnote). — Matthew, Trans. Royal Soc. Canada, 10, see. 4, 1893, 



p. 96. 

 Canadian: Point Levis, Quebec (Levis); St. John, New Brunswick (Bretonian — 



Div. C3d). 



Dictyonema peroracilis Hall. See Desmograptiis pergracilis. 



Dictyonema pertenue Foerste. 



Dictyonema pertenue Foerste, Bull. Sci. Lab. Denison Univ., 2, pt. 1, 1887, p. 

 107, pi. 8, fig. 27a, b; Geol. Surv. Ohio, Pal., 7, 1893, p. 600, pi. 27, figs. 27a, b.— 

 Gurley, Jour. Geol., 4, 1896, p. 308.— Ruedemann, Mem. New York State 

 Mus., 11, pt. 2, 1908, p. 153, figs. 59, 60. 



Tapper Medinan (Brassfield): Soldiers Home near Dayton, Oliio. 



Dictyonema polymorphum Gurley. 



Dictyonema tenellum Spencer, Trans. Acad. Sci. St. Louis, 4, 1884, pi. 1, fig. 13 

 (not description, p. 576); Bull. Mua. Univ. State Missouri, 1, 1884, pi. 1, fig. 13 

 (not description, p. 26). 



