The histological characteristics of the cement apparatus of barnacles have been compared in Lepas anatifera and Balanus tintinnabulum.2. In both species the cement is formed in unicellular glands and conducted to the points of attachment through a series of tubular canals.3. The cement gland cells of L. anatifera differ from those of B. tintinnabulum in several cytological details which may indicate differences in the secretory mechanisms.
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Lacombe et al. (1969) studied this question.