272 AMERICAN JOURNAL 



Fig. S. M. CONCAVA, Say. Jour. Acad. Nat. Sciences, 



ii^, p. 159, (1821.) No. 4. 



Binney, 1. c. ii., p. 163, t. 21. (1851.) 

 "H. planorboides, Pfeiffer, Monog. Heliceorum, 



Viv. iii., p. 156, (1853.) 

 JI. dissidens, Desbayes, Hist. Nat. cles Moll., i., 

 p. 97, t. 84, figs. 1, 2. 



" 9. M. VoYANA, Newcomb. Am. Jour. Conch., i., 



p. 235, (1865.) No. 5. 



" 10. M. Blliotti, Eedfield. Annals N, Y. Lyceum 



Nat. Hist., vi., p. 170, t. 9, figs. 8-10, (1856.) No. 6. 

 Binney, 1. c. iii., p. 23, (1857.) 

 W. G-. B., 1. c. iv., p. 116, t. 77, fig. 18, (1859.) 



HYALINA. 



" 11 H. INDENTATA, Say. Jour. Acad. Nat. Sciences, 



ii, p. 372, (1822.) No. 1. 



Binney, 1. c. ii., p. 242, t. 29, fig. 2, (1851.) 



" 12 H. FRIABILIS, W. G. Binney. Proc. Acad. Nat. 



Sciences, p. 187, (1857.) No. 2. 



Terrest. MollusVs, iv., p. 106, t. 80, fig. 2, 

 (1859.) 



" 13 II. LiEVlGATA, Eafinesque. Pfeiffer, Monog. 



Hel. Yiv., i., p. 64, (1848.) No. 3. 



Binney, 1. c. ii., p. 225, t. 32, (1851.) 



" 14 H. LUCUBRATA, Say. New Harmony Dissemi- 

 nator, ii., p. 229, (1829.) No. 4. 

 Bland, Annals New York Lyceum, (1860.) 



" 15 H. CADUCA, Pfeiffer. Zeitschr. fiir Mai., p. 146, 



(1846.) No. 5. 



Monog, Hel. Yiv. i„ p., 89, (1848.) 

 Is not H. lucid)rata, of Say. 

 " 16 H. FULIGINOSA, Griffith. Binney, I.e. ii., p. 222, 



t. 31, (1851.) No. 6. 



" 17 H. ARBOREA, Say. Nicholson's EncycL, iv., t. 



4, fig. 4, (1816.) No. 16. 



Binney, 1. c. ii., p. 235, t. 29, fig. 3, (1851.) 



"18 H. SCULPTILIS, Bland. Annals N. Y. Lye, vi., 



p. 279, (1858.) No. 8. 



W. G. Binney, 1. c. iv., p. 110, t. 77, fig. 15, 

 (1859.) 



