— 49 — 
(10) Unio tuberculatus Rafinesque. Cumberland River, 
Ohio (Dupuy). 
[Svn. U. verrucosus Rarn.] 
(10) Unio cornutus Barnes. Cumberland River, Ohio (Du¬ 
puy). 
(11) Unio quadrulus Rafinesque. Miami Canal, Ohio (Du¬ 
puy). 
[Syn. U. asperrimus Lea.] 
(11) Unio pustulatus Lea. Cumberland River, Ohio (Dupuy). 
[Syn. U. nodulatus Rfq. var. pustulatus Lea.] 
(12) Unio ellipticus Wagner. Brésil (Joba).^ 
(12) Unio depressus Lamarck. Chili (Joba). 
(13) Unio costatus Rafinesque. Ohio (Dupuy). 
[Syn. U. undàlatùs Born.] 
(14) Unio delphinus Gruner (Chenu, p. 143, fig. 707). Lacs 
américains. 
Genre Margaritana Schümacher. 
[Syn. Baphia Meusch. ; Damalis Leach ; Hemilas- 
tena Rfq. ; Pseudodon Gld.] 
SECTIONS 
(1) Margaritana Schmch. (4) Calceola Sw. 
(2) Alasmodonta Say. Sv ' 1 * 3 ' ^ : opsié Sw. 
(3) Complanaria Sw. 
(1) Margaritana margaritifera Linné.[Dupuy, Hist. Moll.» 
pl. xxn, fig. 14-16.] Auvergne (A. Letourneux). 
[Syn. Unio margaritifera Cuv. ; U. margaritifer 
Flossm.] 
(1) Margaritana Michonii Bourguignat. Lac de Tibériade 
(Bourguignat). 
[Syn. Unio Michonianus Brgt.] 
(3) Margaritana rugosa Barnes. Ohio (Dupuy). 
Genre Microcondylæa Westerlund. 
Microcondylæa Saulcyi Bourguignat. Lac de Tibériade 
(A. Letourneux). 
[Syn. Unio Saulcyi Brgt.] 
c. l. 
