Catawgue Recenti^y Described Moeeusca 177 



Genus ANODONTOIDES Simpson, 1898. 



Anodontoidcs fkussacianus (Lea). 



Anodonia fcnissaciaua iuccrtopsis De Gregorio, Moll, di aq. dul. di Amer., 

 1914, p. 34, pi. XI, fi,?. 5. 



Genus LASMIGONA Rafinesque, 1831. 



Syniphynota Simpson (non Lea), Syn., 1890, p. 662; Desc. Cat., 1914, p. 

 480. 

 Frierson (Naut., XXVIII, 1914, p. 40) has shown that the original type 

 of Lea's Syniphynota was Unio alafus Say and it is therefore a synonym of 

 Proptera Raf. and that consequently Lasniigona Raf. as the earliest avail- 

 able name becomes the generic type. 



Subgenus PL AT YN ALAS Walker, 19 18. 



Platynaias Walker, Occ. Pap., Mus. Zool., U. of M., No. 49, 1918, p. i. 

 Type : Syniphynofa compressa Lea. 



As tJie result of the disappearance of Syniphynota Lea from this genus, 

 the group typified by S. compressa Lea was left without any name and 

 Platynaias has been proposed for it. 



Lasmicona comprkssa (Lea). 



Unio compressa ? lindits De Gregorio, Moll, di aq. dul. di Amer., 1914, p. 14, 

 pi. 6, figs. la-d. 

 Frierson (43, p. 57) has argued that Rafinesque's Unio viridis is this 

 species and consequently has priority. This has been contested l)v Walker 

 (157. p. 74V A^anatta (140, p. 554) states that Poulson's shell labelled 

 Unio viridis fnscata from the Kentucky River, is the S\nn. viridis Con. of 

 Simpson's Synopsis. This I have verified from a personal inspection of the 

 shell. For the reason stated bv Walker, (\. c, p. 78) Lea's name is not 

 superceded by alasnwdontina Stimp. and will stand as the specific name. 



Lasmigona \'TRims Rafinepque. 



For the conflicting opinions in regard to this species see the preceeding 

 note. Lender all of the evidence that has been adduced T think that Raf- 

 inesque's name should be given precedence, with suhviridis Con. (24, Ap]x 

 p. 4), viridis "Con." Simp, and fappaiiianiis Lea as synonyms. 



Subgenus ALA SMI NOT A Ortmann, 1914. 



Alasminuta Ortmann., Naut., XXVIII, 1914, p. 41. 

 Type: Margaritana holstonia Lea. 



Frierson (J[2, p. 7) has identified Rafinesque's Alasmodon hadinm as 

 this species and has designated it as the type of Snlcnlaria Raf. If the 

 species is identifiable from the original description and is Lea's hoIslovJa. 

 Snlcnlaria has jirecedence over Alasminofa. 



