SUCOINEA. 37 



STJCC1NEA AUREA LEA vol. ii. p. 76, pi. Ixvii. c. fig. 3. 



Succinea aurea LEA, Tr. Am. Phil. Soc. ix. p. 4, (1844). 

 PFEIFFER, Mon. Hel. Viv. ii. 525; iii. 15. 

 Succinea ova'iis var. ANTHONY, Shells of Ohio. 1843. 



It has been found on Goat Island, Niagara Falls, (T. 

 Bland.) 



SUCCINEA OVALIS GOULD, non SAY vol. ii. p. 78, pi. Ixvii. a. fig. 3. 



The only other reference to this species is in Gould's 

 Invertebrata and perhaps in Adams's Shells of Vermont. 

 Other authors have confounded it with Say's species. 



I have specimens from Wisconsin, (Lapham) ; South 

 Illinois (Kennicott) ; Michigan (Winchel) ; and Burling- 

 ton, N. J. 



SUCCINEA RETUSA LEA vol. ii. pp. 65, 66. 



PLATE LXXIX. FIGURE 7. 



Succinea retusa LEA, Trans. Am. Phil. Soc. vol. v. p. 117, pi. xix. fig. 86, 

 (1837). 



DEKAY, N. Y. Moll. p. 55. 



PFEIFFER, Mon. Hel. Viv. ii. p. 525. 

 Succinea campestris ANTHONY, Ohio Cat. absq. descr. 



If this species were identical with S. ova/is Gould, as 

 suggested by Binney, it would take precedence by the 

 rule of priority of publication. After examining the 

 specimen from which Lea's description was drawn, I 

 have decided to consider it a distinct species. The 

 figure is a fac-simile of the outline of Lea's. 



Pfeiffer had not seen this species, and DeKay mentions 

 it among the extralimital species. 



Lea remarks, (1. c.) " It differs so much from any of the 

 described species, in the dilatation and retraction of the 

 inferior part of the aperture, that I have not hesitated to 

 consider it new." 



