1238 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Stroponella daytonensis Continued. 



Strophomena (Strophonella) patenta Foerste, Geol. Ohio, 7, 1895, p. 569, pi. 27, 



figs. 35-37. 

 Strophonella filistriata Foerste, 28th Ann. Rep. Dep. Geol. Nat. Res. Indiana, 



1904, p. 29. 



Strophonella daytonensis Foerste, Amer. Jour. Sci., 4th ser., 18, 1904, p. 339. 

 Upper Medinan (Brassfield): Dayton, etc., Ohio. 



Strophonella dixoni Foerste. 



Strophonella dixoni Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 85, pi. 2, 



fig. 21. 

 Niagaran (Brownsport): Dixon Spring and Clifton,' Tennessee. 



Strophonella euglypha (Hisinger). 



Leptsena euglypha Hisinger, Anteckn., 1819, pi. 6, fig. 4. 



Strophomena euglypha Salter, Siluria, 1859, pi. 20, fig. 9. Davidson, Mon. 



British Sil. Brach. Pal. Soc., 1871, p. 288, pi. 40, figs. 1-5. (See for complete 



bibliography.) Etheridge, Quart. Jour. Geol. Soc. London, 34, 1878, p. 597. 

 Strophonella cf. euglypha Holtedahl, 2d Arct. Expl. Fram, 1898-1902, No. 32, 



1914, p. 5. 

 Niagaran: Europe; Cape Hilgard, Cape Louis Napoleon, and North Devon, Arctic 



America. 



STROPHONELLA FILISTRIATA Foerste. See Strophonella daytonensis. 



Strophonella gantl Foerste. 



Strophonella ganti Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 86, pi. 2, 



fig. 22. 

 Niagaran (Brownsport): Martins Mills and Gant Place, West Tennessee. 



Strophonella geniculata (Hall). 



Strophodonta geniculata Hall, Pal. New York, 3, 1859, p. 483, pi. 23, figs. 6a-c. 

 Strophonella geniculata Maynard, Maryland Geol. Surv., Low. Dev., 1913, p. 



321, pi. 59, figs. 3-5. 

 Helderbergian (Keyser): Devils Backbone, near Cumberland, Cash Valley, and 



Tonoloway, Maryland; Keyser, West Virginia. 



Strophonella (Strophoprion) geniculata (Shaler). 



Brachyprion geniculatum Shaler, Bull. Mus. Comp. Zool., 1, 1865, p. 63. 

 Stropheodonta(?) geniculata Schuchert, Bull. U. S. Geol. Surv., 87, 1907, p. 422. 

 Strophoprion geniculatum Twenhofel, Bull. Victoria Mem. Mus., 3, 1914, p. 25. 

 Anticostian (Gun River- Jupiter River): Southwest Point, etc., Anticosti. 



Strophonella keyserensis Swartz. 



Strophonella keyserensis Swartz, Maryland Geol. Surv., Low. Dev., 1913, p. 324, 



pi. 59, fig. 11. 

 Helderbergian (Keyser): Tonoloway, Maryland. 



Strophonella laxiplicata Foerste. 



Strophonella laxiplicata Foerste, Jour. Geol., 11, 1903, p. 711; Bull. Sci. Lab., 



Denison Univ., 14, 1909, p. 86, pi. 2, fig. 25. 

 Niagaran (Brownsport): Brownsport Furnace, Cerro Gordo, Bath Springs, etc., 



Tennessee. 



Strophonella(?) patenta (Hall). 



Leptsena patenta Hall, Pal. New York, 2, 1852, p. 60, pi. 21, fig. 3. Rogers, Geol. 

 Pennsylvania, 2, pt. 2, 1858, p. 823, fig. 631. 



