scHccHERT.] INDEX AND BIBLIOGRAPHY. 425 



Stropheodonta navalis Swallow — Continued. 



of Braibiopoila has taken on as many variations as has S. demissa in the 

 vicinity of Fulton, MisHouri. Mr, D. K. Greger has furnished the writer over 

 one hundred examples of this species and no two are exactly alike. Swal- 

 low's ten 8i)ecies are here reduced to three and one variety: S, navalis and 

 var. booneusis, S. kemperi, and S, eallawayeusis. 



Keyes (Geol. Survey Missouri, Y, 18!t5) regards S. navalis, callawayensis, 

 quadrata, and ;i<|ui(08tata as synonyms for S. demissa, while S. cyniM- 

 formis. sulxymbiformis, kemperi, iuilexa, and booneusis are rei;arded by him 

 as but one species, S. cymbiformis. S, altidorsata is regarde<l as "insufli- 

 ciently described." 



Stropheodonta navalis boonensis Swallow. Hamilton (Dev.). 



Strophodouta booensis and inflexa Swallow Trans. St. Louis x\.cad. Sci., I, 1860, 



pp. 637, 638. 

 Loc. Callaway County, Missouri. 



Stropheodonta nearpassi Barrett. Coralline limestone (Sil.). 



Leptana Hall. Pal. New York, II, 1852, pi. 74, lig. 3. 



Strophodouta nearjiassi Barrett, American Jour. Sci., 3d ser., XV, 1878, p, 372, 

 Loc. Near Port Jervis, New York. 



Stropheodonta parva Owen. Hamilton (Dev.). 



strophodouta parva Owen, Geol. Survey Wisconsin, Iowa, and Miunesota, 1852, 



p. 584, pi. 3A, fig. 9, 

 Loc. New Buffalo, Iowa. 

 Obs. This may prove to be young S. demissa. 



Stropheodonta parva Hall. Upper Helderbeig (Dev.). 



strophodouta parva Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 



37;— Pal. New York, IV, 1867, p. 85, pi. 11, figs. 5, 11, 

 Loc. Albany aud Schoharie counties. New York, 



Stropheodonta patersoni Hall. Oriskaiiy to Coruiferous (Dev.). 



Strophomeua (Strophodouta) patersoni Hall, Tenth Rep. N. Y, State Cab. Nat. 



Hist., 1857, p. 114, figs. 1-5. 

 Stroi^homena f patersoni Billings, Canadian Jour. Sci. Arts, 2d ser., VI, 1861, 



p. 340, fig. 115. 

 Strophomena patersoni Billings, Geol. Canada. 1863, p. 367, fig. 374. — Nicholson, 



Pal. Prov. Ontario, 1873, p. 67. 

 Strophodonta patersoni Hall, Pal. New York, IV, 1867, p. 89, pi. 12, figs. 9-11; 



pi. 13, figs. 1-5; — Second Ann. Rep. N. Y, State Geol,, 1883, pi. 45, fig. 15. — 



Walcott, Mon, U. S, GeoL Survey, VIII, 1884, p, 119. 

 Stropheodonta patersoni Hall and Clarke, Pal. New York, VIII, Pt, I, 1892, pi. 14. 



fig. 15. 

 Loc. Schoharie, Stati'ord, Williamsville, etc.. New York; Columbus, Ohio; Bake- 



oven, Illinois; Eureka district, Nevada; county of Haldimand, Ontaiio, 



Canada. 



Stropheodonta perplana (Conrad). Upper Helderberg-Clieniitng (Dev.). 



Strophomena i)erplaua Conrad, Jour. Acad. Nat. Sci. Philadelphia, AIII, 1842, p. 

 257, pi. 14, fig. 11.— Rogers, Geol. Pennsylvania, II, Pt, II, 1858, p, 827, fig. 665.— 

 Billings, Canadian Jour. Sci. Arts, 2d ser., VI, 1861, p. 343; — Proc, Portland 

 Soc, Nat, Hist., 1863, p. 109.— Nicholson, Pal. Prov. Ontario, 1873, p. 64. 



Stroi)homena delthyris Conrad, Jour. Acad. Nat. Sci. Philadelphia, \lll, 1842 

 p. 258. pi. 14, fig. 19. 



Strophomena pluristriata Conrad, Ibidem, 1842, p. 259. 



Strophomena crenistria Hall, Geol. N, Y. ; Rep, Fourth Dist,, 1843, p. 171, fig. 4. 



