252 JOURNAL OF CONCHOLOGY, VOL. 9, NO. 8, OCTOBER, 1899. 



obscure notata ; valva dextra planiuscula, sinistra convexior, Longii. 



umbone ad marg. ventralem 23, latit. 17, diam. 8 mm. 



Hab., Unkomaas (Burnup). 



This species is distinguished by the closeness of the ribs and the 

 crowded irregular scales upon them ; also for the olivaceous tint of 

 the interior of the valves. The number of the costae is variable, and 

 the interstices between them are very much narrower than the ribs 

 themselves and often more or less filled with series of minute scales. 



Belgium and the Ardennes. — During a fortnight's visit to the above last May 

 and June I took the opportunity of making enquiries as to the records of distribution 

 of Land and Freshwater Mollusca. The Museum at Brussels is admirably arranged. 

 I could not hear of any species peculiar to Belgium. The following localities I 

 noted and they may prove helpful as a guide. For terrestrial species Dinant, 

 Marche, Couvin, Namur, Hastiere, near Dinant, Roumont, Wepion, near Namur, 

 Anseremme, Arlon, Luxemburg, Kinkimpois. For aquatic species Gembloux, 

 Houffalise, La Roche, Vielsalin, near Diekirch. These localities include the Grand 

 Duchy of Luxemburg. Books upon the subject I tried in vain to find at the shops 

 as far as my brief visit allowed. Monsieur Dupont was mentioned as the author of 

 a work on the Conchology of Belgium, and perhaps the book may be known to 

 some member of the Society. My stay in the rural districts was very limited owing 

 to the weather and other causes. But I brought back a live Helix pomatia from 

 Rochefort, and gathered some specimens on the Citadel of Dinant behind the Hotel 

 Tete d'Or after the three days' rain at Whitsuntide. Cyclostoma e/egans was larger 

 than I had yet seen it. and a few Helices and a Hyalinia were the only spoils I took. 

 The limestone districts ought to be very happy hunting grounds if the season be 

 favourable. The Helix po»iatia or Escargot as they call it in Belgium, has made 

 itself at home with me and it is only the fear of the ravages which they are said to 

 make among the vegetables in their native land, which makes me hesitate to send 

 for more. They are to be had for seven pence a dozen and their export is en- 

 couraged rather than otherwise, in spite of their excellent nutritious properties. — 

 Carleton Greene {Read be] 'ore the Society, April 12th, 1899). 



The occurrence of Limnsea peregra var. burnetti in Windermere. 

 — I took a specimen which I believe to be of the above variety of this very 

 variable mollusc in August, 1896, in Windermere, near Water Head, in com- 

 pany with the var. lacustris already well known from this lake. At first I fancied 

 it was only an example of var. laatstris, in which the apical whorls had been des- 

 troyed by erosion, but, on closer examination, it was evidently something else ; and 

 I can myself see no difference between it and well-authenticated specimens of the 

 var. burnetti from Loch Skene. The vars. lacustris and burnetti of L. peregra 

 and L. involuta (which is most probably only a variety of L. peregra) all owe 

 their distinguishing characteristics to a graduated intorsion of the spire, which 

 is most marked in the last-named, less so in the second, and least of all in 

 the first. L. involuta and L. peregra var. burnetti have had exceptional opportuni- 

 ties for developing and perpetuating remarkable variations from their extreme 

 isolation. There is, however, no reason why the same variations should not occa- 

 sionally occur in localities which do not present the circumstances necessary to their 

 permanency. It is to the latter class that I would relegate my specimen of L. 

 peregra v. burnetti from Windermere. — K. Hurlstone Jones, M.B., R.N., 

 H.M.S. ' Repulse,' Jan. 9th, 1898 {Read before the Society, Jan. nth, 1899). 



