A revision of the supraspecific classification of the subclass Calcaronea (Porifera, class Calcarea) Author Borojevic, Radovan Departamento de Histologia e Embriologia, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Caixa Postal 68021, 21941 - 970 Rio de Janeiro (Brazil) radovan @ iq. ufrj. br radovan@iq.ufrj.br Author Boury-Esnault, Nicole Author Vacelet, Jean Centre d’Océanologie de Marseille (CNRS-Université de la Méditerranée, UMR 6540 DIMAR), Station marine d’Endoume, F- 13007 Marseille (France) esnault @ com. univ-mrs. fr jvacelet @ com. univ-mrs. fr text Zoosystema 2000 22 2 203 263 journal article 10.5281/zenodo.5392175 1638-9387 5392175 Genus Kuarrhaphis Dendy & Row, 1913 TYPE SPECIES . — Leucyssa cretacea Haeckel, 1872 by monotypy. DIAGNOSIS. — Trichogypsiidae with a skeleton composed exclusively of small perforated needle-eye diactines. DESCRIPTION Dendy & Row (1913) proposed the genus Kuarraphis for a sponge described by Haeckel (1872) that is characterized by the presence of only needle-eye spicules. The sponge is encrusting, has a leuconoid organization without an atrium, and has irregular exhalant canals. Haeckel (1872) pointed out the similarity of the choanosome and the skeleton of this sponge with those described by him in the “subgenus Leucomalthe ”, which comprises the species that we place now in the Baeriidae . As indicated by Dendy & Row (1913), the “needle-eye” spicules are similar to diapasons, and are also found in Baeria ochotensis .