154 SYNOPSIS OF AMERICAN FOSSIL BRACHIOI'ODA. Inui.i.b,. 



Atrypa phoca (Salter). Silurian. 



Rhynchouellii iihoca .Salter, Sutherland's .lour. Voyage Balifins Bay, etc., II, 1852, 

 ]). c-cxxvi, pi. 5, ligs. 1-3. 



Atrypa phoca Etheiidge, Quart. .Jour. (k'ol. Soc. London, XXXIV, 1878, p. nTfi. 



Loc. Cape Riley, Cornwallis, Seal Islands, Bessels Bay, lat. 81^ 6', and Uobbiua 

 Bay, lat. 79" 41', Arctic America. 

 Atryi)a planocouvexii HalI=Anoplotlieea planofonvexa. 

 Atrypa pleiopleura Conrad = Cainarota'c]iia ]>leio]jlciira. 

 Atrypa pleua Hall=CainarotcecLia plena. 

 Atrypa plicata Hall=Rbynchouella plicata. 

 Atrypa plicatella Hall=Rhynclionella plicatella. 

 Atrypa plicatiila IIan=An()plotlieea plicatula. 

 Atrypa plicifeia HaIl = Cauiarot(JBcbia plena. 

 Atrypa polita Hall=Atbyris polita. 

 Atrjqja prisca Vanuxem = A. reticularis. 



Atrypa pseudomarginalis Hall. Up. Helderberg- (Dev.). 



Atrypa pseudomarginalis Hall, Thirteenth Rep. N. Y. State Cab. Nat. Hist., 

 1860, p. 84 ;— Fifteenth Rep. ll)idein, 1862, p. 189;— Pal. New York, IV, 1867, 

 p. 327, pi 53, ligs. 1, 2.— Hall and Clarke, Ibidem, VIII, Pt. II, 1895, pi. 55, 

 figs. 26, 27. 



Loc. Schoharie, New Y'ork. 



Atryija quadricostata Hall, 1843=Leiorhyucbus quadricostatum. 

 Atrypa quadricostata Hall, 1852 = Hyattella congesta. 

 Atrypa rectiplicata Conrad = Spirifer riectijjlicatus. 

 Atrypa recur virostris Hall=Zygospira recur virostris. 



Atrypa reticularis (Linnieus). Silurian and Devonian. 



Anomia reticularis Linnc, Systema Natune, ed. xii, I, 1767, p. 1132. 



Atrypa chemungeusis Conrad, Jour. Acad. Nat. Sci. Philadelphia, VIII, 1842, p. 

 265.— Vanuxem, Geol. New Y'ork; Rep. Third Dist., 1842, p. 182, lig. 4. 



Hipparionyx consimilaris Vanuxem, Geol. New York; Rep. Third Dist., 1842, j). 

 132, lig. 2. 



Atrypa affinis Vanuxem, Ceol. New York; Rep. Third Dist., 1842, j). S8, lig. 12. — 

 Hall, Ibidem, Rep. Fourth Dist , 1843, p. 88, iig. 12. 



Atrypa prisca Vanuxem, (Jeol. New York ; Rep. Third Dist., 1842, p. 139, lig. 5. — 

 Hall, Ibidem, Rep. Fourth 1 )i8t., 1843, p. 175, lig. 5 ; p. 198, (ig. 4.— Owen, Geol. 

 Expl. Iowa, Wisconsin, Illinois, 1844, pi. 12, figs. 2, 10. — Billings, Canadian 

 Nat. (Jeol., I, 1856, p. 471, pi. 7, fig. 11. 



Atrypa lentiformis Vanuxem, Geol. New York; Rep Third Dist., 1842, p. 1()3, 

 fig. 3; p. 164.— Hall, Ibidem, Rep. Fourth Dist., 1843, p. 215, iig. 3. 



Stroidiomena ithaccnsis Vanuxem, Geol. New York; Rej). Third Dist., 1842, p. 

 174, fig. 2. (On the authority of Professor Williams.) 



Atrypa tribnlis Hall, Geol. New York; Rep. Fourth Dist., 1843, p. 271, fig. 3. 



Terebratula prisca Castelnau, Essai Syst., Sil. I'Amcrique Septentriouale, 1843, 

 p. 40, pi. 13, fig. 8. 



Terebratula reticularis Hall, American .lour. Sci., 2d ser., XX, 1849, j). 227.— 

 Yandell and Shumard, Cont. Geol. Kentucky, 1847, p. 10. 



Atrypa reticularis Hall, Pal. New York, II, 1852, p. 72, ])1. 23, fig. 8; p. 270, pi. 

 55, fig. 5.— Billings, Canadian Nat. Geol., I, 18.56, p. 137, pi. 2, fig. 10.— Hall, 

 Geol. Survey Iowa, II, 185X, p. 515;— Pal. New York, III, 1859, p. 253, pi. 42, 

 fig. 1. — Rocmcr, Sil. Fauna west. Tennessee, 1860, \). 69, pi. 5, fig. 9. — Bil- 

 lings, Canadian .Jour., VI, 1861, p. 264, figs, 84-87; — Geol. Canada, 1863, p. 318, 



