716 Gammarideorum genera dubia et species dubiae 



Psammylla Raf. 1817 P. (Sp. un.: P. littoralis), Rafinesquein; Amer. monthly 

 Mag., V.2 p. 41. 



P. littoralis Raf. 1817 P. /., Rafinesque in: Amer. monthly Mag., v.2 p. 41, 

 North- Atlantic (Long-Island, New- York) and Hudson River. 



Sperehius Raf. 1820 S. (Sp. un.: S. lucidus), Rafinesque, Ann. Nat., p. 6. 



S. lucidus Raf. 1820 S. l, Rafinesque, Ann. Nat., p. 6 | 1825 S. l, A. G. 

 Desmarest, Gonsid. gen. Crust., p. 273. 



Lexington [Kentucky]. In Springs and brooks. 



