372 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. [bull. 87. 



Scenidium pyramidale Hall — Coutiuued. 



Scenidium pyramidale Hall and Clarke, Pal. New York, VIII, Ft. I, 1892, p. 242, 



pi. 7, ligs. 29* 30; pi. 7A, fifrs. 40-42. 

 Loc. Lockpoit, New York; Arisaig, Nova Scotia (Ami). 



SCHIZAMBON Walcott. Genotype S. typicalis Walcott. 



Schizambon Walcott, Mon. U. S. Geol. Survey, VIII, 1881, p. 69.— Hall aud 

 Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 113, 167.— Wiuchell aud Scliu- 

 chert, Minuesota Geol. Survey, III, 1893, p. 360.— Hall and Clarke, Eleventh 

 Ann. Rep. N. Y. State Geologist, 1894, p. 253. 



Scbizambonia CEhlert, Fischer's Manuel de Conchyliologie, 1887, p. 1266. 



Schizambon (?) dodgei Wincbell and Schucbert. Trenton (Ord.). 



Schizambon (f) dodgii W. aud S., Minnesota Geol. Survey, III, 1893, p. 361, 



pi. 30, tigs. .5-7. 

 Loe. Saudyhill, New York. 



Schizambon ("?) fissus canadaensis (Ami). TJtica (Ord.). 



Siphonotreta scotica Whiteaves, American Jour. Sci., 3d ser., XXIV, 1882, p. 



278 ;— Canadian Nat. Geol., X, 1883, p. 396. 

 Siphonotreta scotica var. canadensis Ami, Ottawa Naturalifst, I, 1887, p. 124. 

 Schizambon ( ?) fissus var. canadensis Hall and Clarke, Pal. New York, VIII, 



Pt. I, 1892, p. 115, pi. 4, tigs. 32-36. 

 Loc. Gloucester, Ontario. 



Schizambon (?) lockei Wiucliell and Schuchert. Lorraine (Ord.). 



Schizambon (?) lockii Winchell and Schuchert, Minnesota Geol. Survey, 111, 



1893, p. 362, pi. 30, figs. 8-10. 

 Loc. Cincinnati, Ohio. 



Schizambon typicalis Walcott. Pogonip or Oalciferous (Old.). 



Schizambon typicalis Walcott, Mon. U. S. Geol. Survey, VIII, 1884, p. 70, pi. 1, 



fig. 3.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 114, fig. 65, 



pi. 4, figs. 27-30. 

 Loc. Eureka district, Nevada; Manitou, Colorado. 



SCHIZOBOLUS Ulrich. 



Genotype Discina triincata Hall=Lingulaconcentrica Vanuxem. 



Schizobolus Ulrich, Cout. American Pal., I, 1886, p. 25, pi. 3, fig. 3.— Hall and 

 Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 87, 165;— Eleventh Ann. Rep. 

 N. Y State Geologist, 1894, p. 246. 



Schizobolus concentricus (Vanuxem). Genesee (Dev.). 



Lingula concentrica Vannxeni, Geol. N. Y. ; Rep. Third Dist., 1842, p. 168, fig. 4. — 



Hall, Geol. N. Y. ; Rep. Fourth Dist., 1843, p. 223, fig. 4. 

 Discina truncata Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 28;— 



Pal. New York, IV, 1867, p. 23, pi. 1, fig. 15 ; pi. 2, figs. 36, 37. 

 Discina (Trematis) truncata Hall aud Whitfield, Twenty-fourth Rep. N. Y. State 



Cab. Nat. Hist., 1872, p. 187. 

 Trematis truncata Hall, Twenty-third Rep. Ibidem, 1873, pi. 13, fig. 20. 

 Schizobolus truncatus Ulrich, Cont. American Pal., 1, 1886, p. 25, pl.3, fig. 3.— 



Hall and Clarke, Pal. Now York, VIII, Pt. 1, 1892, p. 87, pi. 3, figs. 11-14. 

 Loc. Ogdcns Ferry, Cayuga Lake, etc, New York; Falls of Ohio; Madison 



County, Kentucky. 



SCHIZOCRANIA Hall and Whitfield. Genotype Orbicula ? filosa Hall. 



Schizocrania Hall aud Whitfield, Pal. Ohio, II, 1875, p. 71.— Hall aud Clarke, Pal. 

 New York, VIII, Pt. 1, 1892, pp. 142, 168.— Wiuchell and Schuchert, Minnesota 

 Geol. Survey, III, 1893, p. 369.— Hall aud Clarke, Eleventh Auu. Rep. N. Y. 

 State Geologist, 1894, p. 259. 



