23- Quarterly jo:: mat of Co;iciio!ogy. 



anJ I bjiieve often mistaken for the true variety albida, which is 

 pure opaque white with translucent markings. The rose colour 

 of the lip is not so intense in the Channel Island shells as the 

 Welsh, although shells bearing this tint are less restricted at the 

 former than at the latter place. Across " The Burrows" at Tenby 

 there is a dry trench three or four yards wide, running at right 

 angles with the present coast line, probably made when the sea 

 was drained from this part of the land. Wm. Jenkins, the veteran 

 collector of marine creatures at Tenby, told me I should not find 

 many Plsana with a pink lip on the " other side" cf this trench, 

 (i.e. the farthest side from the town,^ and I found his remark 

 literally correct, only stray shells with this tinge occurring, and in 

 all cases on the scrub near the line of shore sand, the great 

 majority having a pale ochreous lip and rib. At Tenby there is a 

 variety with red-brown markings, which invariably has a yellow 

 lip, although yellow and pink are common alike to sepia and 

 creamy white varieties. 



I have a few shells exceedingly dark, the hue being given by 

 the coalescence of the bands or markings. 



H. pisana has a wonderful capability of bearing great solar heat. 

 It crawls up the stem of plants, and fixes itself with its shell naked 

 and exposed to the full rays of a burning sun, and so remains all 

 day, descending at " dewy eve'' to enjoy a feast and a ramble. 

 This is a habit peculiar to the more delicately constituted mollusks 

 which have survived the striigglc for e\i3tence, z^ci^ succeeded in 

 Cotablishing th:m^ci\'os in on;- more northern clime, <'. <;. H. 

 CarfUiiana, 



Why is it that this species is only found close to the sea in Great 

 Britain ? It does not seem to have any " likes and dislikes'' in 

 the wav of food. I have not seen it more than half a mile from 

 the shore, and the finest shells are always nearly, if not quite 

 within reach of the sea spray when a strong wind blows. 



