154 SYNOPSIS OF AMERICAN FOSSIL 1311ACII10P0DA. | hull. 87. 



Atrypa phoca (Salter). Silurian. 



Kliyiuhoiiellii i)h()Cfi Salter, Suthcrlamrs Jour. Voyage liatUuB 15ay, etc., 11, 1852, 



l>. cixxvi, |)1. 5, ligs. 1-3. 

 Atrypa pboca Etheridge, Quart. Jour. Gcol. Soc. Ijondon, XXXIV, 1878, p. .576. 

 Loc. Cnpe Riley, Cornwallis, Seal Islands, Bessels Bay, lat. 81"^ G', aud Dobbius 



Hay, lat. 71) ' 11', Arctic America. 



Atrypa planocoiivexa Hall=Aiioplothe('a plauoconvexa. 

 Atryi)a pleiopleura Ooiira(l=Cainarot(Kcliia pleio])leura. 

 Atrypa pleua IIall=CainarottBcbia plena. 

 Atrypa plicata nall = Kbyiichonella plicata. 

 Atrypa plicatella Hall=E.hyncliouella plicatella. 

 Atrypa plicatula Hall=Anoplotbeca plicatula. 

 Atrypa plicii'era Hall = Caniarotoechia i)lena. 

 Atrypa polita Hall=Atliyris polita. 

 Atrypa prisca Vanuxeui=A. reticularis. 



Atrypa pseudomarginalis xlall. Up. Helderberg (Dev.). 



Atrypa iJseudomarginaliH Hall, ThirteeutU Rep. N. Y. State Cab. Nat. Hist., 



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



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



figs. 26, 27. 



Loc. Schoharie, New York. 



Atrypa (luadricostata Hall, 1843=Leiorhyucbus quadricostatuin. 

 Atrypa quadricostata Hall, 1852=:Hyattella congesta. 

 Atrypa rectiplicata Conrad =Spirifer rectiplicatus. 

 Atrypa recurvirostris Hall=Zygospira recurvirostris. 



Atrypa reticularis (Liimteus). Silurian and Devonian. 



Anomia reticularis Liuuc, Systema Natur*, ed. xii, I, 1767, p. 1132. 



Atrypa chemungensis Conrad, Jour. Acad. Nat. Sci. Philadelphia, VIII, 1812, p. 

 265.— Vanuxem, Geol. New York; Rep. Third Diyt., 1842, p. 182, iig. 4. 



Hipparionyx consimilaris Vanuxeni, Geol. New York; Rep. Third Dist., 1842, p. 

 132, fig. 2. 



Atrypa affinis Vanuxem, Geol. New York; Rep. Third Dist., 1842, p. 88, fig. 12.— 

 Hall, Ilndem, Rep. Fourth Dist , 1843, p. 88, fig. 12. 



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

 Hall, Ibidem, Rep. Fourth Dist., 1843, p. 175, fig. 5 ; p. 198, fig. 4.— Owen, Geol. 

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

 Nat. Geol., I, 1856, p. 474, pi. 7, fig. 11. 



Atrypa lentiformis Vanuxem, Geol. New York; Rep Third Dist., 1842, p. 163, 

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



Strophomena ithac.cnsis ^'anuxem, Geol. New York; Rep. Third Dist., 1842, p. 

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



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



Terebratula prisca Castelnau, Essai Syst., Sil. l'Am6rique Septentrionale, 1843, 

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



Terebratula reticularis Hall, American Jour. Sci., 2d ser., XX, 1849, p. 227.- 

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



Atrypa reticularis Hall, Pal. New York, II, 1852, p. 72, pi. 23, tig. 8; p. 270, pi. 

 55, fig. 5.— Billings, Canadian Nat. Geol., I, 1856, p. 137, pi. 2, fig. 10.— Hall, 

 Geol. Survey Iowa, II, 1858, p. 515;— Pal. New York, III, 1859, p. 253, pi. 42, 

 fig. 1.— Roemer, Sil. Fauna west. Tennessee, 1860, p. 69, pi. 5, fig. 9.— Bil- 

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



