244 THE AMERICAN MIDLAND NATURALIST 
Butte; ‘Turtle Mountains. 
Subfamily Neotttinae Pfitz. Entwick. Anord. Orch. 45. 
97. (1887). 
TRIORCHIS Bauhin, Phytopinax 123. (1596); Gerard, 
Herbal (1597); C. Bauhin, Pinax 84. (1623); Tabernaemontanus. 
Gyrostachys Pers. Syn. II: 511. (1807). Ibidium Salsb., Trans. 
Hort. Soc. 1: 291. (1812). Spiranthes L. C. Richard Mem. Mus. 
Paris, 4° 42.)'(1818): 
300. Triorchis stricta (Rydb.) Lunell. 
Gyrostachys stricta Rydb. Mem. N. Y. Bot. Gard. 1: 107. (1900). 
Leeds (extinct), Butte (extinct), Towner, Devils Lake. 
Subfamily Liparididae Lindl. Veg. King. 181. (1847). 
CORALLORHIZA Ruppius, Fl. Jen. (1718); R. Br. Ait. 
Hort. Kew. ed. 2, 5: 209. (1813); Gmel. FI. Sib. I, op. 25. (1747); 
Haller, Hist. Stirp. Indig. Helv. 11: 159. (1768), also 248. (1742). 
301. Corallorhiza trifida Chat. 
Ophrys Corallorhiza Linn. Sp. Pl. 945. (1753). 
Corallorhiza innata R. Br. 1. e¢. 
Corallorhiza Corallorhiza (Iinn.) Karst. Deutsch. FI. 448. 
(1880-83). 
Pleasant Lake. 
CORRECTIONS. 
Page 221, lines 7 and 8: for ciliare... .ciliaris read cilianense 
....ctlianensts. 
Page 224, line 14: Gnomonzia is not valid, being antedated by 
Gnomonia, genus name of a fungus. Substitute HOROLOGION 
(gr. @poAdy Lor, fescue, dial). 
THE NAIADES OF MISSOURI.—IV. 
BY WILLIAM I. UTTERBACK. 
Uniomerus tetralasmus (Say). 
(‘‘Pond Horn Shell.’’) 
Pl. XXI, Figs. 69 A and B. 
1830— Unio tetralasmus Say, Am. Conch., III, pl. XXIII. 
1836—Unio declivis Conrad, Monog., V, p. 45, pl. XXIII, fig. 1. 
1839—Unio sayi Ward, (in Tappan). Am. Jl. Sci, XXXV, p. 268, 
pln te: 1, ; 
ane 
