1909. ANNANDALE, "Freshwater Sponges collected in the Philippines by the 'Albatross' Expedition," _ibid._ xxxvii, pp. 131-132. 1909. ANNANDALE, "Freshwater Sponges in the collection of the United States National Museum: Part II. Specimens from North and South America," _ibid._ pp. 401-406. 1910. ANNANDALE, "Freshwater Sponges in the collection of the United States National Museum: Part III. Description of a new species of _Spongilla_ from China," _ibid._ xxxviii, p. 183. 1910. ANNANDALE, "Description of a new species of Sponge from Cape Comorin," Rec. Ind. Mus. v, p. 31. 1910. STEPHENSON, "On some aquatic Oligochæte worms commensal in _Spongilla carteri_," _ibid._ pp. 233-240. 1910. ANNANDALE, "Note on a Freshwater Sponge and Polyzoon from Ceylon," Spolia Zeylanica, vii. p. 63, pl. i. GLOSSARY OF TECHNICAL TERMS USED IN PART I. _Amphioxi_ (adj. Rod-like spicules sharp at both ends. _amphioxous_) _Amphistrongyli_ (adj. Rod-like spicules blunt at both ends. _amphistrongylous_) _Basal membrane_ A horny, structureless membrane found at the base of some sponges. _Birotulate_ (subst. or adj.) Spicule with a transverse disk at both ends. _Bubble-cells_ Spherical cells of the parenchyma the contents of which consist of a drop of liquid covered by a thin film of protoplasm. _Ciliated_ (or _flagellated_) A cavity lined with collar-cells. _chamber_ _Collar-cell_ (_choanocyte_) Cell provided at one end with a membranous collar and a vibratile lash or flagellum that springs from within the collar. _Derma_ or _ectodermal layer_ A layer of flat cells arranged like a pavement on the surface of the sponge. _Exhalent_ (or _efferent_) A tubular canal through which water _canal_ passes from a ciliated chamber towards the osculum. _Fibres_ (skeleton) Thread-like structures that compose the skeleton of the sponge and are formed (in the Spongillidæ) mainly of overlapping spicules. _Flesh-spicules_ Microscleres (_q. v._) that lie free in the parenchyma and the derma. _Foramen_ An orifice of the gemmule. _Foraminal tubule_ A horny tube that surrounds the foramina of some gemmules.