Catalogue Recently Described Mollusca 119 



Ferrissia fragilis (Tryon). 



As suggested by J. G. Cooper (26, p. 83). and Hannibal (53, p. 148), this 

 is probably the non-septate form of Gundlachia califoniica. 



Ferrissl\ iialdemani (Rourguinat). . 



Ancylus Iialdemani Walker. Xaut., X\^III, 1904, p. 78, pi. 6, figs. 9-13. 



Ferrissia hendersoni (Walker). 



Ancylus hendersoni Walker, Naut., XXT, 1908, p. 138, pi. 9, figs. 8-10. 

 Type locality : Lake Waccamaw, N. C. 



Ferrissia novangei.e; (Walker). 



Ancylus noi'anglicc Walker, X^aut., XXI, 1898, p. 138, pi. 9, figs. 5-7. 

 Type locality : Cambridge, ]\Iass. 



Ferrissia ovalis (Morse). 



Ancylus oi'alis Walker, Xant., X\'III, 1904, p. 79. 



Ferrissia paraelEla (Haldeman). 



Ancylus parallclus Walker, X'^aut., X\'III, 1914, p. yj, pi. 5. figs. 1-9. 



Ferrissia pumila (Sterki). 



Ancylus piiinilus Sterki, 8th Ann. Rep. O. St. Acad. Sci, 1900, p. 36; sep- 

 arate, p. 7; Walker, Xaut., XVIII, 1904, p. 82, pi. 6, figs. 20-22. 

 Type locality : Tuscawaras River, Tuscawaras Co., O. 



It is possible that this will prove to be the non-septate form of Gund- 

 lachia meekiana. 



Ferrissia rivularis (Say). 



Ancylus rivularis Walker, Xaut., XVIII, 1904, p. 25, pi. i, figs, i-io, 13-14. 



Ferrissia si-iimekii (Pilsbry). 



Ancylus obliquus Shimek, Bull. Lab. Xat. Hist., St. Univ. la., I, 1890, p. 214, 

 pi. Ill, figs. 5a-c, non Broderip and Sowerby (1832), nor C. B. Ads. 

 (1850), nor Krauss (1853). 

 Ancylus shimekii Pilsbry, Naut., IV, 1890, p. 48; Walker, Xaut.. XVIII, 



1904, p. 81, pi. 6, figs. 17-19. 

 Type locality: Deadman's Run, Lincoln, X^eb. 



Pilsbr}'- (1. c. and 54, p. 63) has suggested that this may be the non- 

 septate form of a Gundlachia, perhaps meekiana. This was contro\erted 

 'by Walker (1. c), but nevertheless may be correct. 



