Unio. 45 
Dysnomia Ag. : 
3994 1 vibbosus Raf. Am. bor. 
|. U. perplexus Lea Gc. 
U. obliquus Lam. (Pot. & Mich.) 
Hotundaria Raf. 
959 1 colatus Conrad. — 
990 1 sp. — 
Crenodonta Sehlüter (Bariosta Raf ? Com- 
planaria sect. 3 Ag.) 
991 1 plicatus Say. (jun) — 
Proptera undulosa Raf. teste Val. 
U. peruviana Lam. 
Complanaria & rs. (Alasmodonta Autt.) 
NS 1 complanatus Barnes. (Say ?) — 
Compl. gigas Sws. 
Metaptera Etaf (FropteraRaf.LymnadiaSws.) 
959 1  megapterus Raf. — 
4 Symphynota alata "ig Lea. 
8560 4 (minor.) ui 
561.1 latissimus Raf. Am. bor. 
U. Poulsoni Conrad. 
Lampsilis Baf. (Aezlia Sws.) 
962 2 ovatus Say. & — 
963 1 ochraceus Say. — 
964 2 cariosus Say. — 
ud U. ovata Val. 
. U. ventricosus Barnes. cfr. | 
500 2 — — 
966 1 virginianus Lam. j 
D Mya anatina Meush. Mus. 
Gronov. p. 93. 
Mya radiata B Gm. (List. 132. 7.) , 
U. radiata Lam. * 

