Deep-sea “ lithistid ” assemblages from the Norfolk Ridge (New Caledonia), with description of seven new species and a new genus (Porifera, Demospongiae) Author Schlacher-Hoenlinger, Monika A. Queensland Museum, PO Box 3300, South Brisbane 4101 (Australia) monikas @ qm. qld. gov. au Author Pisera, Andrzej Polska Akademia Nauk, ul. Twarda 51 / 55, 00 - 818 Warszawa (Poland) apis @ twarda. pan. pl Author Hooper, John N. A. Queensland Museum, PO Box 3300, South Brisbane 4101 (Australia) johnh @ qm. qld. gov. au text Zoosystema 2005 27 4 649 698 journal article 10.5281/zenodo.5393958 1638-9387 5393958 Genus Isabella n. gen. TYPE SPECIES . — Isabella mirabilis n. sp. here designated. ETYMOLOGY. — Named for the distinct artichoke flower-like appearance and the extremely distinct, filigree, complex skeletal network which is formed by Schlacher-Hoenlinger M. A. et al. FIG. 15. — Neoschrammeniella castrum n. sp. ; A , outer surface of the choanosomal skeleton; B , details of outer surface of the choanosomal skeleton; C , D , details of choanosomal desmas. Scale bars: A, 1 mm; B, 500 µm; C, 200 µm; D, 100 µm. smooth, root/vine-like adjacent desmas via entanglement of their extremities with their lateral extension ( is -, Latin adjectival suffix meaning “having nature of”; bella , Latin for beautiful, pretty). DEFINITION. — Massive shallow cup-shaped “lithistids” with, abundant smooth ectosomal dichotriaenes and endosomal root/vine-like dicranoclone desmas; microscleres are centrotylote microxeas and two types of spirasters (variable spirasters with slender arms and asymmetrical euaster-like streptasters with long rays).