126 



THE NAUTILUS. 



1865. Melantho coarctata W. G. Binney, L. & F. W. Shells, 

 III, p. 53, fig. 108. 



1869. Melantho coarctata Lewis, Am. Jour. Con., v, p. 34. 



1870. Vivipara coarctata Tryon, Mon., p. 32, pi. 15, fig. I. 

 1876. Vivipara (Melantho) ponderosus coarctatus Lewis, Fauna 



of Ala., L. & F. W. Shells, pp. 24 and 40. 



1886. Campeloma subsolidum Call, Bull. Wash. Coll. Lab., I, 

 pi. iv, fig. 10. 



1843. Paludina incrassata Lea, Pr. Am. Phil. Soc., II, p. 243. 



1862. Vivipara incrassata W. G. Binney, Desc. Cat., p. 34, 

 fig. 58. 



1865. Lithasia incrassata W. G. Binney, L. & F. W. Shells, 

 III, p. 65, fig. 65. 



1870, Vivipara incrassata Tryon, Mon., p. 29, pi. 15, fig. 7. 



1876. Vivipara (Melantho) ponderosus incrassatus Lewis, Fauna 

 of Ala., L. & F. W. Shells, pp. 24 and 40. 



1886. Campeloma decisum (part) Call., Bull. Wash. Coll. Lab., 

 I, p. 156. 



1870. Vivipara nolani Tryon, Mon., p. 25, pi. 12, figs. 10-11. 



1876. Vivipara (Melantho) ponderosus nolani Lewis, Fauna of 

 Ala., L. & F. W. Shells, pp. 24 and 40. 



1886. Campeloma ponderosum (part) Call, Bull. Wash. Coll. 

 Lab., I, p. 154, pi. Ill, figs. 8-9. 



This disposition of Lea's coarctata necessitates a new name for 

 the coarctata of Binney. I propose to call it Campeloma lewisii 

 in memory of Dr. James Lewis, who was the first to recognize 

 its specific distinctness from Lea's coarctata. 



The synonymy will be as follows : 

 CAMPELOMA LEWISII n. n. PI. V, fig. 3. 



1865. Melantho coarctata W. G. Binney, L. & F. W. Shells, 

 III, p. 52, fig. 106. 



1869. Melantho sp.? Lewis, Am. Jour. Con., v, p. 36. 



1876. Vivipara, (Melantho) decisus (coarctate var. ) Lewis, 

 Fauna of Ala., L. and F. W. Shells, pp. 24 and 41. 



1886. Campeloma subsolidum (part) Call, Bull. Wash. Coll. 

 Lab., I, p. 155, pi. iv, figs. 8-9. 



1894. Campeloma coarctatum Call, Am. Jour. Sci., xlviii, p. 

 137. 



