154 Bryant Walker 



Pleurocera bit.e.niatum '(Conrad). 



According to Pilsbry (iii, p. 499) Strephobasis clarkii Lea is not a 

 synonym of this species, but of plena Anth. 



PlEurocera eyonii (Lea). 



Strephobasis lyonii Lea, Jour. A. N. S. P., VI, 1866, p. 151, pi. 23, fig. 65; 

 Obs., XI, 1866, p. 107, pi. 23, fig. 65. 



The figure given by Tryon (134, p. 46, fig. 93) for this species is erron- 

 eous and is that of Burycwlon umhonatuni (loc. cit. fig. 658). 



If Pleurocera (Trypanostoma) lyonii Lea is a valid species, it has prior- 

 ity over this one, which, if also a valid species, will have to have a new name. 

 But in the present chaotic state of our knowledge of the family, it does not 

 seem advisable to propose one until the double question of synon3'my is 

 definitely settled. 



PeurocEra TEENUM (Anthony). 



Includes clarkii (Lea), corneum (Lea) and spillmani (Lea) according 

 to Pilsbry (iii, p. 499) and P. glandulum (Anth.). 



"Strephobasis" hartmaniana Lea mss. 



Is listed by Lewis (1. c.) among the probable synonyms of P. cnrtnut 

 (Hald.). It does not appear to have ever been described. 



Genus GONIOBASIS Lea, 1862. 



Hannibal (53, p. 179) has designated G. osculata Lea as the generic 

 type. 



GoNioBAsis ACUTiEiEOSA (Steams). 



Melania (f Goniobasis) acutifilosa Stearns, Pr. U. S. Nat. Mus., XIII, 1800, 



p. 211, pi. XV, fig. 9. 

 Type locality : Eagle Lake, Cal. 



Goniobasis acutieieosa stskiyouensis Pilsbry. 



Goniobasis acutifilosa siskiyoueusis Pilsbry, Naut., XIII, 1899, p. 65. 



Type locality: Fall River, Siskiyou Co., Cal. 



Goniobasis aebanyensis Lea. 



Goniobasis albanyensis Lea, Pr. A. N. S. P., 1864, p. 4; Jour. A. N. S. P.> 

 VI, 1866, p. 140, pi. 23, fig. 49; Obs., XI, 1866, p. 97, pi. 23, fig. 49. 

 Type locality : Albany and Blue Spring, Baker Co., Ga. 



