The Function of the Tegumental Glands in the Statocyst of Homarus vulgaris

Abstract

1. The general structure of the statocyst and the combined sensory setae in Honiarus vulgaris have been described.2. The statoliths consist of sand grains attached to the setæ by a hyaline secretion.3. Numerous tegumental glands occur in the sub-epithelial tissues. Though not situated beneath the setæ, their distribution varies in accordance with that of the setae. Their ducts have characteristic funnel-shaped endings, opening into the cavity of the statocyst.4. The hyaline secretion agrees in all its reactions with the cuticle, never with the chitin.5. The conclusion is reached that the hyaline secretion is formed by these tegumental glands and that this constitutes an important accessory function of these glands.