Catai.ogui; Recently Described Moei,usca 121 



Ferrissia PENiNSur,.^ (Pilsbry and Johnson). 



Ancylus peninsidcs Pilsbry and Johnson, Naut., IX, p. 138; Walker, Naut., 



XVII, 1903, p. 28, pi. II, figs. 19-21. 

 Type locality: St. John's River, Fla. 



SPECIBS INCERT^ SEDIS. 

 Ancyeus calcarius DeKay. 



Ancyeus oregonensis Clessin. 



Ancylus oregonensis Clessin, Con. Cab., Ancylinen, 1882, p. 66, pi. 8, fig. i. 



Type locality: Salem, Oregon. 



Also listed from the Sacramento River, Reading, Shasta Co., by Pilsbry 

 (93, p. 60). 



Genus GUNDLACHIA Pfeiffer, 1849. 



The validity of this genus has been a subject of considerable discussion. 

 See Dall (31, p. 97) and Walker (148, p. 14, and 160, p. 3). Dall has also 

 published a very interesting series of observations on the relations of An- 

 cylus and Giindlachia (34, p. 175). 



Subgenus GUNDLACHIA s. s. 



GUNDEACHIA ANCYElEORMIS Pfeiffer. 



Giindlachia ancyliformis Pfeiffer, Zeitsch. fiir Mai, 1849, p. 98; Ibid, 1853, 



p. 180, pi. T, figs. 1-16. 

 Type locality: Lagune Injinio, San Vincente, Cuba. 



Listed by Simpson (117, p. 96), from Palma Sola, Fla. 



GUNDEACHIA HJALMARSONI Pfeiffer. 



Gundlachia hjalmarsoni Pfeiffer, Mai. Blatt., V, 1858, p. 197. 

 Type locality : Santa Rosa, Honduras. 



Plas been recorded and figured by Clapp (18, p. yy), from the drift of 

 "the Rio Grande, at Brownsville, Texas. 



Subgenus KINCAIDELLA Hannibal, J912. 



This group includes: G. meekiana Stimp., calif omica Row., and stimp- 

 soniana S. Smith. 



Gundlachia stimpsoniana S. Smith. 



Gundlachia stimpsoniana S. Smith, Ann. N. Y. Lye. Nat. Hist., IX, 1870, 



p. 399, fig. 6; Walker, Naut., XXI, 1907, p. 15, pi. IV. 

 Type locality: Greenport, Long Island, N. Y. Also on Shelter Island, N. Y. 



