BRACHIOPODA. 281 



Genus RAFINESQUINA, gkn. nov. 

 LepTjENA and Strophomena of most authors. 



PLATE VUI, FIGS. 1-11; PLATK IXa, FIGS. 1,3,4; AND I'LATK XVa, FIGS. :i7, .18, S) (?). 



1838. LeptOBTM, Conrad. Second Ann. Rept. N. Y. Geolog'ical Sui-vey, p. ll.'). 



1839. Strophomena, Conrad. Third Ann. Rept. N. Y. Geological Survey, pp. 63, 64. 



1840. Strophomena, Conrad. Fourth Ann. Rept. N. Y. Geological Survey, p. 201. 



1841. Strophoiiienn, Conrad. Fifth Ann. Rept. N. Y. Geological Survey, p. 37. 



1842. Strophoiiiena, Conrad. Jour. Acad. Nat. Sci. Phil., vol. viii, p. 2r)4, pi. xiv, tig-. .') ; pp. 2.')9, 260. 

 1842. Stroph«in,eiia>, Vanuxbm. Geological Rript. Third Dist. N. Y., p. 46, fig. 2. 



1842. Strophomena, Emmons. Geol. Rept. Second Dist. N.Y., p. 389, tig. 2 ; p. 39.5, tig. 3 ; p. 403, lig. 3. 



1843. Orthis, db Castelnau. Essai sur le Systenie Silurien de rAmerique .septenti-ionale, pp. 37, 38, 



pi. xiv, tigs. 1, 6. 



1844. Strophomena, Owen. Geol. Expl. Iowa, Wisconsin, and Illinois, pi. xvi, tig. 8; pi. xvii, tig. 6. 

 1847. Leptmna, Hall. Palaeontology of N. Y., vol. i, p. 19, pi. iv (Viis), fig. 2 ; p. 20, pi. iv (bis), fig. 3 ; 



p. 102, pi. xxxi, tig. 1, pi. xxxiA, fig. 1; pp. 106, 107, pi. xxxiA, figs. 2, 3; 



p. 109, pi. xxxi B, fig. 1 ; p. 115, pi xxxi B, fig. S ; p. 286, pi. Ixxix, fig. 2. 

 18,i2. Leptmna, Hall. Palfeont.ology of N. Y., vol. ii, p. 62, pi. xxi. fig. 6. 

 18,56. Strophomena, Billincs. Cana<lian Nat. and Geol., vol. i, p. 214, figs. 3, 4. 



1858. StrophiimeTm, Roger.s. Geology of Pennsylvania, vol. ii, p. 817, tig. 591 ; p 818, fig. 600. 



1859. Strophomena, Hall. Twelfth Rept. N. Y. State Cab. Nat. Hist., p. 70. 



1859. Strophomena, Billings. Canadian Nat. and Geol., vol. iv, p. 443. 



1860. Strophomena, Billing.s. Canadian Nat and Geol., vol. v, pp. 51-54, fig. 1. 



1862. Strophomena, Billings. Palaeozoic Fossils, vol. i, pp. 117, 118, fig. 97; pp. 119, 128, fig. 106. 



1863. Strophomena, Billings. Canadian Geology, Repoi-t of Progi-ess, p. 163, fig. 140; pp. 141, 209, 



fig. 208. 



1865. Strophomena, Shalkr. Bulletin Mus. Comp. Zoology, No. 4, p. 62. 



1868. Strophomena, Meek and Worthen. Geological Survey of Illinois, vol. iii, p. 335, pi. iv, fig. 11. 



1871. Strophomena, Davidson. British Silurian Brachiopoda, p. 285, pi. xlii, tigs. 20, 21 ; p. 292, ])1. xlii, 



figs. 1-5 ; pi. xxxix, figs. 22-24 ; p. 296. pi. xxxvli, figs. 23-26 ; pi. xlii, 

 figs. 6-8 ; p. 383, pi. xlii, figs. 18, 19 ; jil. xlvii. tigs. 1-4 ; pp. 310, 311, 

 pi. xlii, tig. 11 ; pi. xliii, fig. 15 ; p. 312, pi. xiv, figs. 1-10. 



1873. Strophomena, Meek. Palaeontology of Ohio, vol. i, pp. 88-91, pi. vii. 



1874. f>trophome7ia. Miller. Cincinnati Quart. Joui'. Sci., vol. i, p. 13. 



1874. Strophoinena, James. Cincinnati Quart. Jour. Sci., vol i, p. 335. 



1875. Strophomena, Miller. Cincinnati Quart. Jour. Sci., vol. ii, pp. 51-!)4. 



1881. Strophomena, N. H. Winchell. Ninth Annual Rept. State Geologist of Minnesota, p. 120. 



1881. Strophomena, White. Tenth Ann. Rept. Indiana State Geol., p. 113, pi. i, figs. 6, 7. 



1882. Strophomena, \imTV\v.h\>. Geology of Wisconsin, vol. iv, p. 261, pi. xii, figs. 15, 16 ; p. 262, 



pi. xii, fig. 14. 



1883. Strophomena, D.\.vidson. British Silurian Brachiopoda, Suppl., p. 193, pi. xvi, figs. 6, 7. 

 1883. Strophomena, Hall. Rep<u-t N. Y. State Geologist for 1882, pi. xxxviii, figs. 1-11. 

 1887. Strophomena, Shaler. Memoirs Kentucky Geol. Survey, p. 4. pis. ii, iii. 



Diagnosis. Shells normally concavo-conve.v. Surface ornamented by radi- 

 ating striae, of alternating size, crossed and crenulated by finer concentric 

 striae. Cardinal margins without denticulations. Interior of the pedicle-valve 



