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Show 1 9 0 6 . ] OF SOUTHERN INDIA AND CEYLON. 6 7 3 small pear-shaped spermatocyst (9 mm. x 3 mm.) full of brownish matter. Below this i»s the roughly spherical spermatotheca with a diameter of about 20 mm., sessile, or rather forming simply a dilatation of the tube. From the spermatotheca runs a tube about 45 mm. long to the vestibulum genitale, and at the point where it enters it there is a much laminated body of glandular appearance which is probably the Blase of Bergh {I. c. p. 962). No other organs could be identified with certainty. A folliculate gland found detached among the genitalia may perhaps have been the blood-gland dragged out of place, and have had no real connection with them. The eversion and protrusion of the buccal parts found in this specimen have also occurred in the three smaller specimens, but are less conspicuous owing to the relatively small size of the organs. In the specimen examined by Bergh the buccal parts had disappeared. No doubt they had been protruded and then accidentally torn off. In Farran's specimen, too, " the whole buccal mass had been everted through the mouth-opening, so that the radula lay along the under surface of the everted organ." It is therefore clear that the buccal parts are habitually protruded in preserved specimens; but it is impossible to say whether this protrusion is due to convulsive action at the moment of death, or whether the living animal can protrude its radula voluntarily. Information as to its feeding-habits is much to be desired, for whatever may be the cause of the protrusion, it is evident that the buccal organs are of unusual size and strength. An inspection of the parts protruded in all Alder and Hancock's specimens, particularly of their musculature, suggests that the portion nearest to the body of the animal (PI. XLYII. fig. 2 a) is everted, that is to say turned inside out, but that the distal portion (fig. 2 b) is in its natural condition and simply protruded. The smaller (but badly preserved) specimens entirely support this view, because, in them, if the protruded portion is straightened the radula is, or appears to have been, on the upper side. But in the large specimens and in Mr. Farran's specimen the radula lies on the under side; a position which it is difficult to explain, unless we suppose that the radula lias been dragged round and is not in its normal place. P h y l l i d i i d ^e. Few recent additions have been made to this family, which though abundant in the Indo-Pacific, has not hitherto proved numerous in species. It appears to me, however, that Phyllidia zeylanica Kelaart must be regarded as separate from Ph. varicosa with which Bergh unites it. The beautiful animal described by Bergh as Ph. coelestis (Siboga, pp. 182-3) is perhaps a distinct species; but its coloration, though lighter and brighter, is essentially that of Ph. varicosa. Many specimens at any rate of 45* |