Mr. W. H. Benson on some new species of Helix. 107 



niana of Beck's ' Synopsis/ may be. Thie Cape is assigned as 

 their habitat, but whether they belong to its neighbourhood, or 

 to distant districts, cannot be readily ascertained. An attempt 

 to identify Bradi/bana monticola of Beck, has been made above, 

 Albers, in his ' Heliceen ' published in the present year, considers 

 it likely that H. argillacea is a South- African species, because his 

 specimens, received from Eklon, came with the allied H. Lucana 

 to Europe ; but the Cape is a point to which shells coming from 

 the East are likely to be brought, and, in the absence of certain 

 information regarding their South -African origin, there appears 

 no sufficient reason for doubting that Timor, the received habitat, 

 is other than the correct one ; more particularly as some nearly 

 related Helices inhabit the neighbouring north coast of New 

 Holland. 



Albers also, on the authority of specimens in the Berlin Mu- 

 seum derived from Lamare Picquot, cites the Cape as the home 

 of the Boiu'bon species H. detecta, Fer. It appears from a notice 

 in page 181, that Lamare Picquot also collected in the sister 

 island of Mauritius ; and examples are not rare, in either English 

 or continental museums, of glaring errors in assigned habitats, 

 such as to render it desirable to suspend judgement, in the ab- 

 sence of direct evidence concerning the actual locality from the 

 collector himself, who, moreover, may not have been sufficiently 

 careful in the separation and ticketing of specimens obtained in 

 different coimtries. 



Krauss attributes only two species of naked Limacidee to 

 Southern Africa. Near the Cape, four, if not five distinct species 

 were met with. These were, 1st, a large black slug which abounds 

 on oaks at Newlands and llondebosch ; 2nd, a small keeled slug 

 frequent under stones at the latter place, probably Krauss' gar- 

 den Arion; 3rd, the elongated keelless species accompanying 

 Helix perplicata ; 4th, a variegated slug, brown and yellowish, 

 marked with a white line running from the shield to the tail, 

 inhabiting stony places on the skirts of Table Mountain behind 

 Cape Town, and near the sea at Three-anchor Bay ; and lastly, a 

 fine variegated slug which seemed to differ fi-om the last-men- 

 tioned species, and which was creeping about in great abundance, 

 at midday, just before a smart vernal thunderstorm, in a stony 

 tract between Stellenbosch and the mountain range of Simona- 

 berg. 



Aix la Chapelle, Dec. 23r(], 1850. 



