25 



Found in the Limax maximiis, or dark gray slug, with 

 longitudinal stripes of darker spots, and the keel 

 a little toothed or undulated. 



15. LiMACELLUs Unguiculus. Shell rhombic, thick- 

 ish, flat, rarely concave. 



Limacella Unguiculus. Brard, p. 116. t. 4./. 3, 4, 

 11, 12. 



Found in the Limax carinatus, Leach, Mollusc, p, 73. 

 t. 8./. 1. or gray slug, with a saffron-coloured 

 keel, which reaches to the very top of the back, 

 and touches the disk or shield. 



It is about half the size of the last. 



16. LiMACELLUs variegatus. Shell thin, concave, 

 mammillated externally at its posterior extremity. 



About the size of the last, and is found in the slug, 

 which is of a yellowish or blackish-gray colour, 

 variegated with pale yellow or saffron, with the 

 thorax elegantly spotted with clay-yellow or saf- 

 fron colour ; and the keel saffron or pale yellow. 



Limacella concava. Brard,]), 121. t. 4i.f. 5, 6, 13, 

 14, 15. 



Found in gardens, under stones. 



