330 Mr. T. D. A. Cockerell's Notes on Slugs. 



Amalia {gagates subsp.) plumbea (Moq.). 



Smoother than the type, but of about the same size. 

 Colour plumbeous, usually darker on the back than at the 

 sides. Found in many parts of England and also in France. 

 The British Museum contains examples from Bath {J. E. 

 Daniel) and South Shields (R. Howse). 



Amalia plumbea , var. olivacea (Moq.). 



Like the last, but olivaceous. England, France, and Italy. 

 Whether the Italian form is like subsp. plumbea in structure 

 and size I do not know ; but olivacea as found in England 

 falls under plumbea. 



Amalia plumbea , var. rava (Wilms.). 



A drab-coloured form found in the west of England. There 

 is a specimen from Bath (/. E. Daniel) in the British 

 Museum. 



Amalia plumbea ', forma nov. 



Pale lavender-colour. Found in Cardiganshire (see J. W. 

 Taylor, Journ. of Conch., Oct. 1888, p. 360). 



Amalia gagates, forma typus, Less. & Poll. 



Of moderate size, rather rugose, black. Bare in England, 

 frequent in Southern Europe. The British Museum has a 

 specimen from Bath (J. E. Daniel) which may be referred to 

 typus ; but it has really the coloration of the American var. 

 JJewstoni, being black or blackish, with the sides and sole 

 pale. 



Amalia gagates, forma Benoiti, Less. & Poll. 

 Black, with the keel whitish. Italian. 



Amalia gagates, forma nov. atlantica. 



This is based on a specimen found at Tangier, collected by 

 Mr. J. H. Ponsonby. It may be described as follows : — 



Length 28, breadth A\ millim. Head black; mantle jet- 

 black, respiratory orifice a little posterior to the middle, hinder 

 part of mantle considerably raised ; body black, slightly trans- 

 lucent at sides, keel entire, rug* not well marked; body 



