GASTEROPODA PULMONEA. 



31 



orifice is on tin- ritilit side of this species of shield, and the anus on the 

 margin of that orifice. The four tcntacula are protruded and re- 

 tracted, evolving themselves like the inverted fingers of a glove, and 

 the ii.-ud itself can be partly withdrawn under the disk of the mantle. 

 The ovnital organs open under the upper right tentaculum. The 

 mouth has only an upper jaw, resembling a dentated cresent, which 

 niahies these animals to gnaw fruits and herbs, which they do with 

 so much vunicity as to eft'ect considerable injury. The stomach is 

 elongated, .simple and membranous 

 M. de Ferussac distinguishes 



ARION, Fer., 



In which the respiratory orifice is towards the anterior part of the 

 shield, which merely contains a few calcareous granules. Such is 



Limax Rufw, L. (the Red Limax;) Ferussac, Moll. Terr, et 



Fluv., pi. i. and iii. Jt is everywhere to be met with in wet 



ther, and is sometimes entirely black, Ib. II, i, 2. A decoc- 



Columbella 

 Mitra .... 

 \ oluta .. .. 

 Maivinellu 

 \ 



Fourth Family. 

 Les Columellaires. 



Ovulii . . .. 



a .. 

 Hum 



Aiu-illa.... 

 Olivu .. . 

 C'oiui> . . 



Fifth Family. 

 Les Enroul&s. 



No canal at the base of the 

 aperture, but a subdorsal 

 notch more or less distinct, 

 and having plaits on the* 

 columella of the shell. The 

 Columbellte have a small 

 operculum attached to the 

 foot of the animal, 

 f- Shell without a canal, but hav- 

 ing the base of the aperture 

 effuse or notched ; the whorls 

 it' it* ^pire large, compressed, 

 rolled round each other, so 

 th.it the last nearly conceals 

 all the others, renderinp tin- 

 spiral cavity large and nar- 

 row, and indicating that the 

 iimly of the animal mint In- 

 flattened. The two first ge- 

 nera of this family have the 

 rijrht lip rerun oil inwardly; 

 no operculum. 



