[ xxii. "] 



TRIODOPSIS. 



Fig. 5. T. INTROFERENS, Bland. Ann. N. Y. Lye. 



Nat. Hist., vii.,t. iv,, f. 3-4, Apr., 1860. No. 8. 



" 6, 13. T. TRiDENTATA, Say. Nicholson's Encyc, 

 iv., t. 2, f. 1, 1816. 

 Binney, Terr. Moll., ii., p. 183, part, t. 27, 



1851. ' 

 W. G. Binney, 1. c. iv. p. 70, 1859. 

 Bland, 1. c. vii., p. 423,1862. No. 1. 



XOLOTREMA. 



" 7, 11. X. APPRESSA, Say. Jour. Acad. Nat. Sci., 

 ii., p. 154, 1821. 

 Binney, Bost. Jour. Nat. Hist., iii., p. 356, 



t. 8, July, 1840. 

 Binney, Terr. Moll., ii., p. 140, t. 13, 1851. 

 W. G. Binney, 1. c. iv., p. 59, 1859. 

 Bland, 1. c. vii., p. 432, 1862. 

 IT. linguifera, Lamarck. Anim. S. vert, vi., p. 



90, 1822. No. 5. 



ISOGNOMOSTOMA. 



" 8. I. RuGBLi, Shuttleworth. Diagnosen neuer 



Mollusken, No. 2, p. 18. 

 Bern, Mittheil., p. 198, 1852. 

 Binney, Terr. Moll., iii., p. 18, 1857. 

 W. G. Binney, 1. c. iv., p. 60, t. 78, f. 15, 



1859. 

 Bland, 1. c. vii., p. 426, 1862. No. 2. 



TRIODOPSIS. 



" 9. T. HopETONENSis, Shuttleworth. Bern. Mit- 

 theil, p. 198, 1852. 

 Binney, Terr. Moll., iii., p. 17, 1857. 

 W. G. Binney, 1. c. iv., p. 72, t. 77, f. 16, 



1859. No. 4. 



ISOGNOMOSTOMA. 



" 10. I. INFLECTA, Say. Jour. Acad. Nat. Sci., ii., 

 p. 153, 1821. 

 Binney, Bost. Jour., iii., p. 358, t. 9, f. 1, 

 July, 1840. 



