334 SYNOPSIS OF AMElilOAN FOSSIL, BKACHIOPODA. [bull.87. 



Protorhyncha (?) antiquata ( IJillings). Lower Oambriau. 



C;im;iriill;ii auti<iii:it:i Jiilliiigs, I'al. FoHails, I, 18t>l, p. 10, fig. 13; — Gool. Vermont;, 



II, 1861, i». illil, iig. 353;— Geol. Cauada, 1803, p. L'84, iij;. 290.— Walcoit, Bull. 



U. S. Geol. Survey, 30, 1880, p. 122, pi. 7, lig. 8;— Teuth Ann. Rep. U. S. Geol. 



Survey, 1891, p. 013. pi. 72, fig. 3. 

 Cauiarella ? aiiti(iuat:i Hall uud Clarke, Pal. New York, VIII, Pt. II, 1893, p. 220. 

 Loc. S wanton. Vermont. 



Protorhyncha dubia Ilall. Chazy (Orel.). 



Atrypa dubia Hall, Pal. New York, I, 1847, p. 21, pi. 4 bis, fig. 5. 

 KliynchoiicUa dubia Hall, Twelfth Kep, N. Y. State Cab. Nat. Hist., 1859, p. 60. 

 Protorhyncha dubia Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 180. 

 Loc. Chazy, New York ; Highbridge, Kentucky ; Lascassas, Tennessee. 



Protorhyncha ("?) minor (Walcott). Lower Cambrian. 



Camarella (!) minor Walcott, Proc. U. S. Nat. Mus., XII, 1889, p. 36;— Tenth 



Ann. Rep. U. S. Geol. Survey, 1891, p. 614, pi. 72, fig. 4.— Hall and Clarke, 



Pal. New York, VIII, Pt. II, 1893, p. 221. 

 Loc. Stissingville, New Y'ork. 

 Obs. May be the type of a new genus. Its aiffinities are rather with the Rhyn- 



chonellidfB than with Peutamerid;e. 



Protorthis Hall and Clarke=Billingsella. 



Protosiphon Matthew. Genotype P. kempauus Matthew. 



Protosiphon Matthew, Geol. Mag., dec. IV, IV, 1897, p. 70. 



Protosiphon kempanus Matthew. Lower Cambrian. 



Protosiphon kempanum Matthew, Geol. Mag., dec. IV, IV, 1897, p. 70, figs. 1-4. 

 Loc. Long Island, Kings County, New Brunswick. 



Protozyga Hall and Clarke=Zygospira. 



Pseudocrania anomala A. Winchell=Orthothetes anomalus. 



PTYCHOSPIRA Hall and C. Genotype Terebratula ferita von Buch. 

 Ptychospira Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 112, fig. 102;— 

 Thirteenth Ann. Rep. N. Y. State Geologist, 1895, p. 792. 



Ptychospira sexplicata (White and Whitfield.) Waverly (L. Carb.). 



Retzia sexplicata White and Whitfield, Proc. Boston Soc. Nat. Hist., VIII, 1862, 



p. 294. 

 Ptychospira sexplicata Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 



112, pi. 50, figs. 13, 14; pi. 83, fig. 28. 

 Loc. Burlington, Iowa. 



PUGNAX Hall and 0. Genotype Ehynchonella acuminata (Martin). 

 Pugnax Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 202 ;— Thirteenth 



Ann. Rep. N. Y. State Geologist, 1895, p. 828. 

 Obs. Subgenus of Hypothyris. 



Pugnax (?) dawsoniana (Davidson). Upper Carboniferous. 



Rhynchouella daw.soniana Davidson, Quart. .lour. Geol. Soc. London, XIX, 1863, 



p. 172, pi. 9, figs. 13, 14. 

 Rhynchouella ? dawsoniana Dawson, Acadian Geology, 3d ed., 1878, p. 294, 



fig. 93. 

 Pugnax ( ?) dawsouianus Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 



214, pi. 62, figs. 30-33. 

 Loc. Lennox Passage, Nova Scotia. 



