Axinyssa Lendenfeld, 1897

Carballo, José Luis & Cruz-Barraza, José Antonio, 2008, First record of Axinyssa Lendenfeld, 1897 (Demospongiae, Halichondrida) from the East Pacific Ocean, with the description of Axinyssa isabela sp. nov., Zootaxa 1784, pp. 58-68 : 59

Genus Axinyssa Lendenfeld, 1897

Diagnosis. Massive, lobate or tubular sponges with a finely conulose surface. The ectosomal region is lacking a distinct surface skeleton, largely organic, tough, with sparsely scattered spicules and protruding spicule bundles. The choanosomal skeleton is disorganized, with spicules strewn in confusion and/or composed of vaguely ascending, widely spaced vertical tracts of large oxeas or strongyloxeas, forming loose bundles. The choanosome has poor or moderate spongin development, but heavy interspicular collagen; spicule density is relatively low. Spicules oxeas, strongyloxeas or stylote modifications, usually of only one size class (Erpenbeck & van Soest 2002).