Call — The Unionidce of Arkansas. 41 



Conchologia Iconica, Vol. XVI, Unio Plate XII, Fig. 

 43, as Unio bullatus, Rafinesque, 1804 ; Unio bullatns 

 Rafinesque; so Conrad, in Monograph of Unio, PL XL, 

 Fig. 2, 1838. This is probably the form intended by 

 Hildreth as his Unio verrucosa alba. Vide Am. Jour. 

 Sci. and Arts, 1st series, 1828, Vol. XIV, p. 289. 



Unio sdiooJcraftensis Lea. Trans. Am. Philos. Soc., 

 Vol. V, 1832, p. 37, PI. Ill, Fig. 9, from Fox river, 

 Wisconsin. This name, for grammatical reasons, was 

 subsequently changed to schoolcraftii. Reeve also 

 figures this form, Conchologia Iconica, Vol. XVI, Unio 

 Plate I, Fig. 3, 1868. Plates XIII, XIV, Figs. 1-4, 

 herein. 



Unio prasinus Conrad. New Fresh Water Shells of the 

 United States, 1834, p. 44, PI. Ill, Fig. 1. An imma- 

 ture shell from Fox river, Wisconsin. Reeve, Conchologia 

 Iconica, Vol. XIV, Unio Plate VII, Figs. 26a, 26b, 

 1864; these two figures are excellent, and are taken from 

 specimens presented to the Museum Cuming by John G. 

 Anthonv. 



Unio turgidus Lea. Trans. Am. Philos. Soc, Vol. VI, 

 1834, p. 11, PL V, Fig. 11; Reeve, Conchologia Iconica, 

 Vol. XVI, Unio Plate III, Fig. 10, 1864. Described 

 from near New Orleans, Louisiana. 



Unio dorfeuillianus Lea. Trans. Am. Philos. Soc, 

 Vol. VI, 1836, p. 73, PL XVII, Fig. 54; Reeve, Concho- 

 logia Iconica, Vol. XVI, Unio Plate X, Fig. 38, 1864. 

 A poor figure. Described from the Ohio river, at Cincin- 

 nati. Plate XV, Figs. 1-2, herein. 



Unio mortoni Conrad. Monograph of Unio, p. 11, 

 Plate VI, Fig. I, 1836. Described from the Bayou 

 Teche, Louisiana. This is Lea's Unio turgidus. 



Unio pernodosus Lea. Trans. Am. Philos. Soc, Vol. 

 X, 1845, p. 71, PL III, Fig. 8; Reeve, Conchologia 

 Iconica, Vol. XVI, Unio Plate XII, Fig. 46, 1864. 

 Described from North Carolina. 



Unio asperatus Lea. Jour. Acad. Nat. Sci. Phila., 2d 

 series, Vol. V, 1861, p. 68, PL VII, Fig. 218; Reeve, 

 Conchologia Iconica, Vol. XVI, Unio Plate LXXXV, 



