TY - JOUR AU - AB - By examination of samples of Purpura lapillus from the whole of their European range, it appears that the species can exhibit quite as wide variation within a relatively small region such as that studied in the Dorset-Devon-Cornwall area, as it can over its whole geographic range. Population samples were taken from seventy-six localities, mostly in the south-west of England, and covering a wide range of environmental conditions, and the variations in these shells were studied in relation to two primary environmental factors, degree of exposure to wave-action and diet. TI - The Biology ofPurpura Lapillus. I. Shell Variation in Relation to Environment JF - Journal of the Marine Biological Association of the United Kingdom DO - 10.1017/s002531540001119x DA - 1936-11-01 UR - https://www.deepdyve.com/lp/crossref/the-biology-ofpurpura-lapillus-i-shell-variation-in-relation-to-Gt24v3Kl2G SP - 61 EP - 89 VL - 21 IS - 1 DP - DeepDyve ER -