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und D. subglobosa n. sp. von Malacca, Myliusia Gr. mit 1 Art, Mac- 

 Andrewia Gr. mit 1 Art, Farrea Bow. mit 1 Art. 



Fam. 2. Aphrocallistidae. Sponge tubulär; tubes reticu- 

 late, subcircular, closed at the end with a netted lid. 



Gen. Aphrooallistcs Gr. mit 1 Sp. 



Ordo II. Keratospongiae. Sponge elastic. Sceleton formed of 

 horny netted fibres, generally without, but sometimes more or 

 less strengthened with minute siliceous spicules or gains of sand. 



Fam. 3. Spongiadae. Sceleton formed of oue kind of re- 

 ticulated horny fibres, not enclosing any spicules or sand. 



Gen. Spongia Lin. 5 Sp., Spongionella Bow. 1 Sp., Cacospon- 

 gia Schm. 2 Sp., Siphonia Blainv. 1 Sp., Aplysina Schm. 2 Sp., Ve- 

 rongia Bow. 2 Sp., Auliskia Bow. 1 Sp. 



Fam. 4. Hiroiniadae. Sceleton formed of two kinds of 

 horny fibres; the oue, forming the base of the sceleton. thick, reti- 

 culated, with a more or less distinct central line of minute spicules 

 or granules of sand ; the other very slender, at the apex of the 

 branches, which do not anastomose. 



Gen. Hircinia Schm. 8 Sp., Sarcotragus Schm. 2 Sp,, Sterama- 

 tumenia Bow. 1 Sp. 



Fam. 5. Dysideidae. Sceleton formed of reticulated horny 

 fibres with sand or spicules of other sponges imbedded in the cen- 

 tre, and covered with a more or less thick coat of horny matter. 

 Brittle when dry. 



Gen. Dysidea Johnst. 5 Sp. 



Fam. 6. Chalinidae. Sceleton formed of reticulated horny 

 anastomosing filaments, which have one or more series of siliceous 

 spicules in the central line. 



Gen. Chalina Bow. 1 Sp., Isodictya Bow. 2 Sp., Halispongia 

 Bow. 1 Sp., Acanthella Schm. 2 Sp., Tragosia n. gen. mit Sp. 

 infundibuliformis L. und Isodictya dissimilis Bow., Clathria Schm. 

 2 Sp., Axinella Schm. 4 Sp. Astrospongia n. gen. mit Axiuella 

 polypoides Schm., Astrostoma Gr. 1 Sp. 



Fam. 7. Ophistospongiadae. Sceleton of netted horny, or 

 expanded skin-like fibres, covered with superficial spicules, forming 

 an irregulär coat, or which are single or grouped, and divergent 

 from the surface. 



Gen. Ophistospongia Bow. 2 Sp., Seriatula n. gen. mit Sp. 

 seriata Gr., Ectyon n. gen. (Sponge massive, reticulated, or cylin- 

 drical horny fibres, with single scattered or groups of diverging 

 spicules. Spicules fusiforin, vei'ticillated, spined) mit K sparsus n, 

 Westindien, E. fascicularis n. Westindien, E. Carpenteri n. Mada- 

 gascar, Äcarnia n. gen. mit Hymeniacidon Cliftoni Bow., Naenia 

 n. gen. mit Hymeraphia verticillata Bow., Raphyrua Bow. 2 Sp. 



18 



