LIMN^A.— Plate V. 



Species 34. (Mus. Brit.) 



LiMN^A SuMASii. Lini. testd eleganter pyramidatd, 

 corned, gracili ; spird productd, anfractibvs con- 

 vexiusculis, ultimo ovato ; aperturd breviiisculd, 

 oblique subovatd. 



The Sumass Limn^a. Shell elegantly jiyramidal, 

 horny, narrow ; spire produced, whorls rather 



convex, the last ovate ; aperture rather short, 



obliquely subovate. 

 Baird. Proc. Zool. Soc. 

 Hab. Sumass Prairie, Vancouver's Island. 



With the more elegantly curved lines of our British 

 Limnwa stagtialis, this species has the narrow form and 

 shortened aperture of our L. palustris. 



