An overview of the Mediterranean cave-dwelling horny sponges (Porifera, Demospongiae) Author Manconi, Renata Author Cadeddu, Barbara Author Ledda, Fabio Author Pronzato, Roberto text ZooKeys 2013 281 1 68 http://dx.doi.org/10.3897/zookeys.281.4171 journal article http://dx.doi.org/10.3897/zookeys.281.4171 1313-2970-281-1 Chelonaplysilla noevus (Carter, 1876) Fig. 4 Aplysina noevus Carter, 1876: 229. Description. Growth form encrusting (less than 2 mm in height). Surface conulose, ornamented by a network of rounded meshes (200-300 µm in diameter) loaded of inclusions; inside the meshes surface is smooth and perforated by small apertures (15-40 µm in diameter). Colour from grey to violet ( Vacelet 1959 , 1969 ). Dendritic modules (tree-shaped) of the skeleton with fibres apically branched (80 µm in diameter at their base, 20 µm at the apical branch level). Habitat. Cave, coralligenous community, rocky bottom. On small pebbles or epibiotic on Microcosmus vulgaris Heller, 1877, Corallium rubrum (L., 1759) and Sarcotragus foetidus . Bathymetric range 1-150 m. Mediterranean caves. Blava, Calamars, Misidacis caves (Balearic Sea); Endoume, Figuier, Tremies caves (Gulf of Lions) ( Pouliquen 1972 ; Uriz et al. 1992 ; Marti et al. 2004 ; Pronzato and Manconi 2011 ). Figure 4 Chelonaplysilla noevus . a original illustration of the type specimen encrusting with conulose surface b close-up of the sponge surface with mineral debris and smooth rounded inhalant areas (lighter in the scheme) bearing small ostia; a modified from Carter (1876) b modified from Topsent (1925) .