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



There can be no doubt that L. Hewstoni is correctly refer- 

 able to A. gagates, and it differs very little from the type. 



Amalia gagates, var. plumbea. 



A plumbea form occurs with var. Hewstoni, or at least in 

 the same region. A specimen in alcohol sent to me by Mr. 

 Binney was 18 millim. long, back very sharply keeled, sole 

 pale orange-yellowish, posterior edge of mantle pale. Reti- 

 culations as in var. Hewstoni. General colour leaden grey. 

 Liver ochreous. This specimen was found by Mr. Hemphill 

 in North Idaho or Washington, the exact locality not being 

 known. 



A large specimen of var. plumbea, collected by Mr. Hemp- 

 hill at Julian City, California, was sent to me by Mr. Binney 

 more recently. 



This var. plumbea is really a subvariety of Hewstoni which 

 has the colour-character of the European subsp. A. plumbea, 

 but is not sufficiently segregated to be considered a subspecies. 



f. Pacific Islands. 



In the British Museum is a specimen of Amalia fuliginosa 

 (Gould) marked " Polynesian Islands " (S. Stevens). It is 

 uniform sooty (black-brown), including sole; not very 

 rugose ; transverse grooves on back hardly noticeable, though 

 the longitudinal ones are plain. The median area of the sole 

 is narrower than in New-Zealand examples ; but I think they 

 cannot be separated even as varieties. 



i. Juan Fernandez. 

 Amalia gagates, forma tristensis. 



There are six specimens from Juan Fernandez (' Chal- 

 lenger ' coll.) in the British Museum, which may be described 

 as follows : — 



Blackish or greyish above, sides and sole more or less 

 yellowish. Region of respiratory orifice yellow. Interstices 

 of the main rugee on back inclined to be dark. Opaque slugs, 

 with the ruga? rather strong. 



ii. Sandwich Islands. 

 Amalia sandwichensis (Eydoux). 



The figure of this species given in Tryon's work evidently 

 represents an Amalia, and probably a form of A. gagates. 



