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



Strophodonta boonensis Swallow=S. iiavalis boonensis. 

 Strophodoiita cadata Hall=Strophonella ca'lata. 

 Strophodonta cavumbonai Hall=Stroplionella cavuinl)ona. 

 Strophodoiita cayuta. lIall=Stoplieodonta niucronata. 

 Strophodonta cyinbiformis Swallow=S. iiavalis. 

 Strop'iodoiita exilis Calvin = Stropheodoiita calvini. 

 Stroi)hodonta fragilis Hall=S. perplaua. 

 Strophodonta genicAilata Hall=:Strophonella geniculata. 

 Strophodonta headleyaiia Hall=Strophonella headleyana. 

 Strophodonta hybrida Hall and Whitfield=Strophonella reversa. 

 Strophodonta iniitata A. Winchell=S. demissa imitata. 

 Strophodonta inflexa Swallow = S. navalis boonensis. 

 Strophodonta intermedia Hall = Hipparionyx proximus, 

 Strophodonta leaven worthana Hall = Stroi)honella leaven worthana. 

 Strophodonta niucronata Hall=S. interstrialis. 

 Strophodonta nacrea Hall = Pholidostrophia iowaensis. 

 Strophodonta punctulifera Hall=Strophonella punctulifera. 

 Strophodonta quadrata Swallow=S. callawayeusis. 

 Strophodonta quadrata Calvin (non Swallow) = S. calvini. 

 Strophodonta reversa Hall=Strophonella reversa. 

 Strophodonta striata Hall=Strophonella striata. 

 Strophodonta subcymbitbrmis Swallow=S. navalis. 

 Strophodonta subdemissa Hall=S. demissa. 

 Strophodonta textilis Hall, 1857 (not 1852) = S. junia. 



STROPHOMENA (Eafinesque) Blainville. Genotype S. riigosa Blainv. 



Strophomeua Blainville, Mamiel de Malacologie et Couchyliologie, 1. 1825, p. 513, 

 pi. 53, fig. 2. — Defrance, Dictionnaire des Sciences Naturelles, LI, 1827, p. 151 

 and atlas. — King, Mon. Permian Fossils, Pal. Soc, 1850, p. 103. — Meek (par- 

 tim), Pal. Ohio, I, 1873, p. 73. — ffiblert, Fischer's Manuel de Couchyliologie, 

 1887, p. 1281.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 245.— 

 Wiuchell and Schuchert, Minnesota Geol. Survey, III, 1893, p. 384. — Hall 

 and Clarke, Eleventh Ann. Eep, N. Y. State Geologist, 1894, p. 283. 



Strophonienes Rafinesqne, Desc. Remarkable Objects in the Cabinet of Professor 

 Eafinesque, 1831, p. 4. 



Hemipronites Meek and Hayden, Pal. Upper Missouri, ^mitlisonian Cent, to 

 Know]. XIV, 172, 1864, p. 24.— Miller, Cincinnati Quart. Jour. Sci., II, 1875, 

 p. 41. 



Oba. This genus is characteristic of the Ordovician, and probably does not 

 extend into the Silurian, where Orthothetes replaces Strophomeua. A num- 

 ber of Silurian species are still left under Strophomeua since their generic 

 characters are uuknowu. 



Strophomena acanthoptera Whiteaves=Stropheodonta acanthoptera. 

 Strophomena acntiradiata Hall=Chonetes acutiradiatus. 

 Strophomena alternata Emmons=Rafinesquina alternata. 

 Strophomena alternata fracta Meek=Rafinesquina alternata fracta. 

 Strophomena alternata loxorhytis Meek=Iiafinesquina alternata lox- 



orhytis. 

 Strophomena alternistriata Hall=Rafinesqnina alternata alternistriata. 



