710 BULLETIN i)2, UNITED STATES NATIONAL MUSEUM. 



Lepttena nitens (Billings). 



Strophomena nitens Billings. Canadian Nat. Geol., 5, 1860, p. 53, fig. 1; Pal. 



Foss., 1, Geol. Surv. Canada, 1865, p. 118, fig. 97 (adv. sheets, 1802); Geol. 



Canada, 1863, p. 209, fig. 208.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 



1890. p. 1130. figs. 

 Rafinosquina nitens Hall and Clarke, Pal. NeV York, 8. pt. 1, 1892, p. 283. 

 Lepta-na nitens "Wliiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 120. 

 Richmond: Charlcton Point, etc.. Anticosti (Charleton and English Head and 



Gamachian); Stony Mountain, Manitoba (Stony Mountain); Wyoming; etc. 



LEPT.ENA OBSCURA Hall. See Rafinosquina obscura. 



Lept^na orthididea Hall. See Strophomena? orthididea. 



LEPTiENA PATEXTA Hall. Scc Strophonella pateuta. 



LEPTiENA PLANOCONVEXA Hall. See Strophomena planoconvexa. 



LEPT.EXA PLAXUMBONA Hall. See Strophomena planumbona. 



LEPTiExA PLicATELLA Ulrich. Scc Plectambouites plicatellus. 



Leptjexa plicifera Hall. See Lepta?na incrassata. 



Lept.«;na precosis Sardeson. See Plectambonites precosis. 



Lept.«:xa profunda Hall. See Stropheodonta profunda. 



Lept^na prolongata Foerste. See Plectambonites transversalis prolongatus. 



Lept^na quadrilatera Shaler. See Leptsena rhomboidalis. 



Lept^exa recedens Sardeson. See Plectambonites recedens. 



Lept.i;xa recta Hall. See Dinorthis (Plsesiomys) deflecta. 



Leptsena reticulata (Shaler). 



Str()i)honiena reticulata Shaler, Bull. Mtis. Comp. Zool., 4, 1865, p. 62. 

 Richmond (Charlcton) and Gamacliiiin (Ellis Bay): EUi.s Bay, Anticosti. 



Leptsena rhomboldall.s (Wilckens). 



Conchita rhomboidalis Wilckens, Nachrict von solten Versteinerungeu, 17C9, p. 



77, pi. 8, figs. 43, 44. 

 Anomitos rhomboidalis Walilon])erg, Acta Soc. Up.sala, 3, 1821, p. 65. 

 Strophomena undulosa Conrad, 5th Ann. Rep. Geol. Surv. New York, 1S41, p. 54. 

 Strophomena depressa Vanuxem, Geol. New York, Rep. 3d Dist., 1842, p. 79, 



fig. 5.— Hall, ibid., Rop. 4th Dist., 1843, p. 77, fig. 5; p. 104, fig. 2.— Billings, 



Canadian Nat. Geol., 1, 1856, p. 59, pi. 1, fig. 5.— Roemer, Sil. Fauna West. 



Tennessee, 1860, p. 65, pi. 5, fig. 2.— I^sley, Geol. Surv. Penn.sylvania, Rep. 



P4, 1890, p. 1126, figs. 

 Strophomena iindulatus Vanuxem, Geol. New York, Rop. 3d Di.st., 1842, p. 139, 



fig. 3.— Hall, ibid., Rep. Uh Di.'Jt., 1843, p. 175, fig. 3.— Yandell and Shumard, 



Cont. Geol. Kentucky, 1S47, p. 11. 

 Productus? sulcatua Castelnau, Essai Syst. Sil. I'Am^riquo Septentrionale, 1843, 



p. 39, pl. 13, fig. 7. 

 Productus Hulcifcr do Vemouil, ibid., 1843, p. 39. 

 Ix-pta^na dcpre.ssa^all, Pal. New York, 2, 1852, p. 62, pl. 21, fig. 8; p. 257; pl. 



53, fig. 6.— Rogers, Ge(^l. Penn.sylvania, 2, pt. 2, 1858, p. 823, fig. 630. 



