293 



OX A FURTHER COLLECTION OF SLUGS FROM THE HAAVAIIAN 

 (OR SANDWICH) ISLANDS. 



By Walter E. CoLLiifGE, F.Z.S., etc., 



Assistant Lecturer and Demonstrator in Zoology and Comparative 

 Anatomy, Mason University College, Birmingliam. 



Read nth Jane, 1897. 



Iiv the early part of 1896 I communicated a paper' to this Society 

 upon a collection of slugs made by Mr. R. C. L. Pei-kins in the 

 Sandwich, or Hawaiian Islands, for a Joint Committee of the Eoyal 

 Society and British Association. A further collection has recently 

 been received and handed to me for identification. 



In the present collection there is a far larger number of specimens 

 of each species, and they are all in a much better state of preservation 

 than those previously describcnl. 



In my earlier paper I hriefly reviewed the literature and gave 

 a list of the species of slugs that have been recorded from these 

 islands. I am now able to supplement the same by the addition of 

 three species, two of which are new. 



For some time I was undecided whether or not to separate Amalia 

 Bahori from A. yarjates, Drap.; and Agriolimax Bevenoti from A. Icevis, 

 Miill. In all probability tlie former developed from Amalia gagatcs, 

 and the latter from Agriolimax Icevis. Each has become modified in 

 certain features, due probably to isolation and habitat, but as these 

 features will in all probability become more and more pronounced 

 and permanent in the race occupying the Sandwich Isles, it is better, 

 I think, to separate them as distinct species. 



In my previous paper (t.c, p. 49) I called attention to, and 

 figured, some slight differences in specimens of Amalia gagates, 

 from Maui (cf. Figs. Ill, IV, and V, p. 48). An examination of 

 the present collections from Haleakala convinces me that there are 

 three distinct groups of this form in these islands, viz. : 



Amalia gagates, Drap. 



Amalia gagates, var. (as figured), from Maui. 



Amalia Bahori, n.sp. 



The specimens of Agriolimax here described, which have probably 

 all originated from A. Icevis, Miill., exhibit a similar variability. 

 Thus, in a collection from Kauai (2,000 feet) most of the specimens 

 may be regarded as A. Icevis, Miill., those from Kauai (4,000 feet) as 

 ul. Bevenoti, n.sp., while others from Haleakala (5,000 feet), mountains 



' Proe. Maluc. Soc, Vol. ii (1896), pp. -KJ-Ol. 



