Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 SLUGS,âSNAILS. 39 14. Some, called Arions, have the pulmonary orifice situate near the anterior part of the dorsal shield, such as the Limax rvfvs, which is everywhere met with in wet weather; [a de- coction of this species is sometimes used in France for pulmo- nary disorders :] the others, named Limax properly so called, or m ro â¢'.,si Fig. 22. LIMAX RUFUS, Lima, have this orifice situate more posteriorly, and frequently liave a pretty well formed inte
Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 SLUGS,âSNAILS. 39 14. Some, called Arions, have the pulmonary orifice situate near the anterior part of the dorsal shield, such as the Limax rvfvs, which is everywhere met with in wet weather; [a de- coction of this species is sometimes used in France for pulmo- nary disorders :] the others, named Limax properly so called, or m ro â¢'.,si Fig. 22. LIMAX RUFUS, Lima, have this orifice situate more posteriorly, and frequently liave a pretty well formed internal shell ; the Limax cinereus^ which inhabits caves and shady forests, belongs to this division, as well as the Umax agrestis^ which abounds in some countries, and is very injurious to agriculture. We give the names of Vaginula, Testacella, and Parma- CELLA to other naked gasteropods, nearly resembling the limaces, but which differ from them in the position of the anus, the extent of tbe mantle, &c. 15. The SnailsâHelixâ^orm the most important tribe of terrestrial pulmonea with a complete and apparent shell.ââ Their organization differs very little from that <3^ the h'maces ; the mantle, instead of being in the form of a convex shield, constitutes a large cone twisted on itself, containing thr viscera, which is covered by the shell [fig. 21, p. 35). .We di^^tinguish them by their shell, the opening of which is ordinarily raised like a pad or collar, forming a thickened lip in the adult; the shell is a little twisted by the projection of the penullimate whorl of the spire, and in this way takes somewhat of a descent shape, fn snails properly so called, this opening is at least as broad as high, and the shell is sometimes globular and sometimes depressed. The habits of these moUusks are nearly the snme as those of the limaces. In summer they are very voracious, but in the autumn they eat very little, and, on the approach of Explanation of Fig. 22.âLimax rufvs :âst.
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