i82 Bryant Walkkr 



Lami'Silis CRACFLiS Barnes. 



This species has l^een identified Ijy Frierson (42, p. 7) and others as the 

 Unio fragilis Raf. (1S20) and I.asmonos fragilis Raf. (1831) and either of 

 these names, if identifiable from the original description, would have prior- 

 ity. The example under this name in the Poulson collection according to 

 Vanatta (t.io, p. 552) is gracilis Bar. 



Fragilis Raf. (1831) is the monotype of his genus Lasinonos. 



Lampsilis IRIS (Lea). 



Is a Micromya according to Ortmann (79, p. 341). 



LaMP.SIUS LEPTODON (Raf.). 



Unio shepardiantts f. duttoiiianiis De Gregorio, Moll, di aq. dul. di Amer., 

 1914, p. 25. 

 This species is the t\'pe of Lcpfodea Raf. b^^ designation (Frierson, 42, 

 p. 6). 



LamPSIUS LIENOSA (Con.). 



Is a Micromya according to Ortmann (79, p. 340). 



Lampsilis ijgamentina (Lam.). 



Unio tecomcnsis De Gregorio, AIoll. di aq. dul. di Amer., 191.:], p. 26. 



This species was at first referred to Oboraria by Ortmann (78, p. 119) 

 and later to Nephronaias (79, p. 325). It should rather be referred to Ac- 

 tin on aias F. and C. 



According to the specimens in the Poulson collection (Vanatta, 140, p. 

 551) U. crassa Raf., fasciata Raf. and pal! ens Raf. are this species. 



Lampsilis lutlola (Lam.). 



Vanatta (140, p. 551) states that L. fasciola Raf. is this species. 



Lampsilis neeulosa (Con.). 



Is a Micromya according to Ortmann (81. p. 64). 



Lampsilis nigerrima (Lea). 



Is a variety of L. conccstator Lea according to Frierson (41, p. 135^ 



Lampsilis occidentalis (Con.). 



Is PtycJwbrniichus diiitojicnsis Simp, and has priority according to Ut- 

 terback (135, p. 317). 



Lampsilis orbiculata (Hild.). 



Belongs to iMJnpsilis s. s. and does not group with L. ligamcntina Lam. 

 according to Ortmann (79, p. 353)- 



