84 COCKERELL ! THE BRITISH ARIONID^. 



related to the Helicidce than to the Limacidce. Dr. Simroth must feel 

 rather surprised to learn that, although he endeavoured to show in 

 his work the close anatomical relationship of Helix and Limax, 

 nevertheless the true result is that they are not related at all. 



With regard to the exotic forms, it is too premature to speak of 

 their relation to European genera before anything of their anatomy 

 is known. The arrangement based entirely on the characters of the 

 jaw and lingual ribbon will probably be found to be altogether at 

 fault when the rest of the anatomy is taken into consideration. 



THE BRITISH ARONID/E. 



By T. D. A. COCKERELL, F.Z.S., F.E.S., 

 Curator of the Museum of the Institute' of Jamaica, Kingston. 



Naturally, I have been much interested in reading the first part 

 of Mr. Collinge's Review of the British Arionidas. There has been 

 a great deal of difference of opinion about the species and varieties 

 in this group, so that anything that may be written on them is liable 

 to provoke discussion ; but the purpose of the present note is merely 

 to refer to a few statements which seem to be in need of correction. 

 If I am mistaken about any of them, I shall be glad to be put right. 



Page 58. Asfidoporus should not, I think, be included in any list 

 of slugs (vide P.Z.S., 1891, p. 221). According to very strict 

 priority, it seems that Aspidoponts, Fitz., 1833, should replace 

 Amalia; and Clytropelta, Heyn., the section firaiuca, but in 

 both these cases the older name was not accompanied by 

 a proper definition. I never regarded Asfidoporus as a genus 

 of Arionidce, doubtful or otherwise. 



Pheuacarion, Ckll., is a genus or subgenus of Arionince, not 

 given in the list. It seems to me to be at best a subgenus of 

 Prophysaon, but Mr. W. G. Binney, in his latest work (4th 

 Suppl. Terr. Moll. U.S.), treats it as a valid genus. 



Page 60. I cannot agree as to A. empiricorutn var. ruber. The 

 var. ruber Moq. (the prior name for which is latnarckii, Kal., 

 185 1) is the bright brick-red form so common in various parts 

 of the continent, but not found, so far as I am aware, in the 

 British Island. Dr. Scharff refers to this form in " Slugs of 

 Ireland" p. 538 and p. 555, remarking on its absence in Ireland ; 

 I gave some notes on the same variety in Ann. Mag. N.H., 1887, 

 p. 174. It occurs at least as far south as Pau, in the Basses 

 Pyrenees, where it was found by the Rev. J. W. Horsley (in 



