LIMNEA EXPANSA. 29 



OBSERVATIONS. 



" This species is more nearly related to L. 

 reflcxus, Nob., than to any other known species 

 of North America; but it is only necessary to 

 compare the two, in order to perceive a wide 

 difference between them. The present is smaller 

 and proportionally more slender, and the spire 

 is more attenuated." — Say. 



LIMNEA EXPANSA, Hald. 



Plate 9. — Figs. 6 — 8. 



L. testa inflato-conica, tenui, brevi, diaphana: apertura 

 lata, labro repando: plica columeliari profunda. 



SYNONYMS AND REFERENCES. 

 L. EXPANSA, Hald. In this work, October, 1840. 



DESCRIPTION. 



Shell short, smooth, translucent, and fragile; 

 body whirl inflated: spire as long as the aper- 

 ture, and rapidly attenuated to an acute apex: 



