184 Bryant Wai^kdr 



Lamtsilis recta I:ATissima (Raf.). 



Unio hitissiina Rafinesque, ]\Ion., 1820, p. 297, pi. Ixxx, figs. 14-15. 



Unio angiistatiis cuniculus De Gregorio, jMoll. di aq. dul. di Amer., 1914, 



p. 22, pi. X, fig. I. 

 Type locality : Ohio River. 



This is the form represented in the Ponlson collection (\"anatta 140, 

 P- 550- 



Lampsilis simpsoni Ferriss. 



Belongs to Lasmonos Raf. according to Utterback (135, p. 367). 



Lampsius subrostrata (Say). 



Belongs to Euryiiia s. s. according to Ortmann (81, p. 55). 



Lampsilis tf.nera (Ravenel, J\Iss.) Mazyck. 



Lanipsilis tencrus (Rav. AIss.) Mazyck, Cat. ]\Ioll. S. C, 1913, p. 23. 

 Type locality : Santee Canal, St. John's, Berkeley, S. C . 

 The specific name is preoccupied by Lea, 1840. 



Lampsilis trabalis (Con.). 



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



Lampsius vanuxemensis (Lea). 



Is a Micromya according to Ortmann (79, p. 3-42; 81, p. 65). 



Lampsieis vkntricosa (Bar.). 



According to Say and Conrad this is the L. cardium Raf., 1820, and if 

 so ,the latter name has priority. Vanatta (140, p. 551) states that the shell 

 so labelled in the Poulson collection is the ventricosa Bar. 



According to Ortmann (79, p. 351) it "is probably only a variety of L. 

 ovata (Say). 



Lampsius ventricosa cohongoronta Ortmann. 



Lampsilis ventricosa cohongoronta Ortmann, Naut., XXVI, 1912, p. 53. 



Type locality not specified. Found in the Potomac River, Hancock, Wash- 

 ington Co., Md., and in the South Branch of the Potomac at South- 

 branch and Romney, W. Va., and in the Shenandoah River, Harper's 

 Ferry, W. Yd.. 



Lampsilis ventricosa satura (Lea). 



Frierson (41, p. 136) says that this is not a variety of L. ventricosa, but 

 is the same as L. excavata Lea and has priority as the proper specific name. 

 I do not agree with this. Ortmann (81, p. 56) deals with it as a form of 

 ventricosa and intimates a "suspicion"' that it may prove to be a distinct 

 species. 



