TESTACELLID^E. 



L. SOWERBII. Ferussac. PL IV, fig. 10. 



Mantle short, truncated behind ; granulated ; yellowish brown 

 colour; tentacles bluish black; shell small, oval, and convex beneath; 

 keel obvious. 



L. carinatus, Gray. 



This slug may be distinguished by its prominent keel 

 and short truncated mantle. It is about three inches in 

 length. The shell is two or three lines long. 



Hob. Gardens and damp places in the south of Eng- 

 land. We have found single specimens in the north of 

 Yorkshire, though by no means common. Many locali- 

 ties in Ireland are recorded. 



L. GAGATES. Draparnaud. PL IV, fig. 11. 

 Obtuse, back carinated, bluish grey colour, lanceolate. 



This rare slug is only recorded as having been found 

 in one place in England, but has been taken in many 

 places in Ireland. The mantle is very obtuse, and in 

 outward appearance much more resembles that of an 

 Arion than a Limax. The shell is small, oval, and 

 plano-convex. The head is of the same colour as the 

 body, but the tentacles are generally rather darker. 



Hob. Shady places under stones, Ireland. 



TESTACELLID^E. 

 TESTACELLA. Cuvier. 



Shell Strong and large for the size of the animal, situated at 



the extremity of the body ; external, auriform-shape, with 



a minute spire. 

 Animal Elongated; of a yellowish, reddish, or grey hue; 



tentacles cylindrical, four in number, the two anterior 



ones being furnished with eyes. 



T. HALIOTOIDEA. Draparnaud. PL V, fig. 5. 



Testacellus haliotoideus, Gray, fyc. 



This species is confined to the south of England, and 

 Ireland, where it has been most probably introduced ; 

 it was first found in the Channel Isles. The genus is 

 intermediate between the slug and the snail ; the shell 



