HELIX. 227 



that H. pulcheUa has never crossed the Atlantic. If 1 

 may be permitted to offer a suggestion on this knotty 

 pointy I would remark that^ being a comparatively north- 

 ern species^ it is much more probable that it has spread 

 from the Arctic regions tlu'ough Canada. This is one 

 of the European species which Dr. Thompson found in 

 Cashmir and Thibet, according to the identification of 

 Mr. Woodward. 



This little creature is very shy and difficult to observe. 

 Its eyes appear remarkably black, in consequence of the 

 two upper tentacles being so transparent. The liver is 

 saifron-coloured ; and the upper part of the spire in dead 

 shells often shows it. The epiphragm is like tissue- 

 paper and iridescent. Bouchard- Chantereaux says tliat 

 H. pulchella lays, in August and September, from 12 to 

 20 globular and opaline eggs, which are united in a 

 cluster two or three times the size of the shell. It seems 

 to be hardy, and has been found at rather considerable 

 heights. Von Martens noticed its occurrence on the 

 Dovre fjelds at an elevation of more than 2000 feet. 



This species is the H. paludosa of Da Costa and 

 Montagu, and the Turbo Helicinus of Lightfoot; but 

 the name given by Miiller is anterior to both of these. 



23. H. lapici'da*, Linne. 



H. lapicida, Linn. Syst. Nat. ed. xii. p. 1241 ; F. & H. iv. p. 65, pi. cxvi. 

 f. 3, 4. 



Body yellowish-brown above, with a slight tinge of red in 

 front, and of grey behind and underneath, covered with mi- 

 nute close-set, unequal-sized tubercles, which are of a darker 

 colour and arranged in indistinct lines corresponding with 

 those of the tubercles or granulations on the siuface of the 

 shell : mantle extended round and hning the mouth of the 

 shell, concentrically wrinkled and tumid, reddish-brown or 



* Lapidary. 



