24 

 LIMNEA UMBROSA, Say. 



PLATE 7. 



L. testa elongata, ventricosa, fusca: spira attenuata, 

 acuta: anfractibus senis, convexiusculis, transversim minu- 

 tissime striatis: apertura semicirculari; labro repando. 



SYNONYMS AND REFERENCES. 



LIMNEUS ELONGATUS, SAY. Journ. Acad. Nat. Sci., vol. 



ii. p. 167. 

 LIMN E us UMBROSUS, SAY. Amer. Conchology, pi. 31. 



fig. 1. 



DESCRIPTION. 



Shell lengthened, ventricose, composed of 

 six slightly convex whirls, of which the anterior 

 one is somewhat inflated: surface covered with 

 numerous minute transverse spiral lines: suture 

 oblique, with little depth, but well marked: 

 spire attenuated, with the apex acute: fold on 

 the columella not well marked: aperture wide, 

 nearly straight on the inside, wide anteriorly; 

 less than half the length of the shell: body 

 whirl above, longer than half the entire length. 



