38 LIMNEA COLUMELLA. 



and 12 are 'L. apicina,' the perfect agreement 

 of the former shell (fig. 11) with the descrip- 

 tion and remarks, and the tolerable resemblance 

 to the figure of L. solida, and of the shell fig. 

 12, with the description of 'L. apicina;' lastly, 

 an examination of his specimen of L. solida 

 (fig. 13) afforded me by Mr. Lea. 



LIMNEA COLUMELLA, Say. 



Plate 12. 



L. testa ovata, fragili, diaphana: anfractibus 4 convexis, 

 ultimo maximo; lineis transversis minutis corrugatis: aper- 

 tura lata. 



SYNONYMS AND REFERENCES. 



L. columella, Say. Nich. Encyc. (3d Amer. edit.) 

 Lymnea, No. 3. — Jour. Acad. Nat. Sci., vol. i. p. 15. 



L. columella, Gould. Invert, of Mass., p. 215, fig. 144. 



Var. chalybea, " Ibid. p. 216, fig. 145. 



L. navicula, Val., in Rec. d'Obs. de Zool. etc. par Humb. 

 et Bonpl., vol. ii. p. 251. 



L. acuminata, Adams. Am. Journ. Sci., vol. 39, p. 374. 



L. macrostomus, Say. Journ. Acad. Nat. Sci., vol. ii. 

 p. 170. 



