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本文叙述采用“直接法”、连续又系统地观察西施舌幼虫至幼贝器官的发生和形成的细微、渐变的全过程，有全套显微绘图和摄影并详细文字说明，特别是对稚贝与幼贝的晶杆与晶杆囊、平衡囊和三对神经节的形成之描述，是国内、外的首例。
This article describes the use of the “direct method” to continuously and systematically observe the whole process of the subtle and gradual change of the larvae of Xanthoceras regia larvae to the organs of Sabina vulgaris with a full set of micrographing and photography with detailed textual explanations, especially for juvenile and juvenile Babe’s crystal rod and crystal pole capsule, balance capsule and the formation of three pairs of ganglia description, is the first case at home and abroad.