PART II. 



LIMACIN^. 



327 



entire, rarely closed by an operculum_, and sometimes 

 only rudimentary. 



SuBFAM. 1. LIMACIN^. Slugs. 



Shell very thin, often rudimentary, and generally too 

 small to contain the entire animal ; tentacula, when 

 present, cylindrical, and bearing the eyes at their tip. 



Herpa. Tentacula two, or none ; shell none ; jaws 

 none, or not discernible. 



Herpa Guild. Linear, fusiform, anterior greatly at- 

 tenuated ; eyes very small, sessile ; tentacula none. 

 H. gigas. See App. '-~ /^ 



Onchidium Buch. (fig. 95.) Tentacula 



two ; mantle very large, tuberculated, 



almost covering the body ; mouth 



with two triangular flattened lobes. 



; Typhoe Buck. Lin. Tr. v. 132. 



LiMAx Linn. Tentacula four ; shell 

 rudimentary, or none. 



Limax Linn. Orifice near the pos- 

 terior part of the mantle ; shell 

 very small. 



L. variegatus. GrifF. Cuv. pi. 35. f. 2. 



Avion Fer. Orifice near the anterior end of the man- 

 tle ; shell none. 



A. empiricorum. GrifF. Cuv. pi. 35. f. 1. 



Vaginula Fer. Mantle large, covering the whole body ; 

 no shell. 



V. Taunaysii. Griff. Cuv. p]. 35. f. 7. 



Parmacella Lam. Mantle moderate, membranaceous, 

 placed on the middle of the back ; the edges loose ; 

 shell oblong, flat ; spire minute. 



P Olivieri. Griff. Cuv. pi. 35. f. 5. 



Testacella Lam. Mantle very small, and placed at the 

 posterior extremity of the body ; shell small. 

 T. haliotoidea. Griff. Cuv. pi. 35. f. 4. 

 Y 4 



