48 University of Michigan 



Unio fasciata Rafinesque, '20, p. 294. 



Unio ellipticus Barnes, '23, p. 259, pi. 13, f. 19 (not U. elltptica 

 Raf., '20). 



Unio carinatus Barnes, '2:3, p. 259, pi. li, f. 10. 



U. ligamentina Lam. = U. crassus Say, Lea, '34, p. 88 (type exam- 

 ined). 



U. fasciatus Raf . = f/. carinatus Barn., Conrad, '34, p. 69; '35, p. 



3, pl. I- 



U. crassus Say = U. carinatus Barn., Ferussac, '35, p. 27, 3;^. 



Lampsxlis ligamentina (Lam.), Simpson, '14, p. 79. 



U. crassa (Say), Raf. = t/. fasciata Raf. = [/. pallens Raf., '31 = 

 Lamp, ligamentina (Lam.), Vanatta, '15, p. 551 ("types" examined). 



U. fasciata Raf. = U. siliquoidea Bar., '23 = U. luteolus auct,, Frier- 

 son, '19, p. 139. 



Actinonaias ligamentina (Lam.), Ortmann, '19, p. 232. 



U. crassus and U. ellipticus are noniina prceocciipata. U. 

 ligamentina is absolutely unrecognizable (the description could 

 not possibly be poorer), and so is U. fasciata, which might be 

 this or fasciolaris Raf. and even U. siliquoidea Barn., accord- 

 ing to Frierson (see under L. siliquoidea). The description 

 applies to both and the so-called Rafinesque-Poulson "type" is 

 the so-called ligamentina. It might also be any other species 

 with elliptical outlines and with rays {iris group). 



The first valid name (recognizable and not preoccupied) 

 under which the present species was published is carinatus 

 Bar., and a good figure of this has also been given. The deter- 

 mination of the type of U. ligamentina Lam. by Lea was sub- 

 sequent to this, and thus has no effect. 



Actinonaias pectorosa (Conrad), 1834 



Type locality: Elk River, near its junction with Tennessee, 

 Northern Alabama. 



Unio vittatis Rafinesque, '31, p. 2. 



Unio pectorosus Conrad, '34 (May), p. 37, pl- 6, f. i. 



Unio perdix Lea, '34 (August or September) (not '27 as given by 

 Simpson), p. 72, pl. n, f- 3i- 



U. pectorosus Con., '34 (May), = {7. perdix Lea, '34 (September), 

 Conrad, '36, p. 25, pl. n, f. i. 



