国内外学者对以钉螺外形和齿舌作为钉螺分类的依据有分歧意见。为此,我们采集平果、东兰、都安和宾阳4个县残存的活螺80只,分别测量其长度、宽度及螺层数,并解剖分离出完整的齿舌带,在高倍镜下逐行观察并记录每横列上全部齿舌的齿数,列出公式,统计出各自所占的百分数,从而了解其是否有规律性,并对广西四个县和四川彭县的钉螺各 Domestic and foreign scholars have different views on the basis of snail shape and tongue as snail classification. To this end, we collected 80 live snails survived in 4 counties of Pingguo, Donglan, Du’an and Binyang, and measured their length, width and number of spiral layers, respectively, and dissected the intact tongue with high resolution Under each row, observe and record the number of teeth on all rows of tongue in each row, list the formulas and calculate their respective percentages so as to know whether they are regular or not.