Grüneberg H
Proc R Soc Lond B Biol Sci. 1979 Jan 15;203(1153):379-86. doi: 10.1098/rspb.1979.0004.
Western Clithon from India and Ceylon differs from eastern Clithon from the Malay Peninsula and Hong Kong as regards shell pattern and coloration (Grüneberg 1976, 1978). The western form lives in regions with high surface salinity whereas the eastern form lives in regions with low surface salinity. This situation may either reflect a causal relation, or it may be the result of a coincidence. The evidence presented in this paper speaks against a causal relation and suggests that other factors with a similar geographical distribution may be at work.
来自印度和锡兰的西方滨螺在贝壳图案和颜色方面与来自马来半岛和香港的东方滨螺不同（格林伯格，1976年，1978年）。西方形态生活在表层盐度高的地区，而东方形态生活在表层盐度低的地区。这种情况可能反映了一种因果关系，也可能是巧合的结果。本文所提供的证据反对因果关系，并表明其他具有类似地理分布的因素可能在起作用。
