Clathrina is a genus of calcareous sponge in the family Clathrinidae. Several species formerly in Clathrina were transferred to the newly erected genera Arturia, Ernstia, Borojevia, and Brattegardia in 2013. The name is derived from the Latin word "clathratus" meaning "latticed". Description Species of Clathrina have a tubular organization as all species of the family Clathrinidae, with the cormus composed of anastomosed tubes. The skeleton contains spicules in the form of triactines and/or tetractines, sometimes with diactines, tripods and tetrapods as well. The choanoderm is usually flat, never forming folds when the sponge is extended. Species There are 68 species assigned to Clathrina. Clathrina angraensis Azevedo & Klautau, 2007 Clathrina antofagastensis Azevedo, Hajdu, Willenz & Klautau, 2009 Clathrina aphrodita Azevedo, Cóndor-Luján, Willenz, Hajdu, Hooker & Klautau, 2015 Clathrina arabica (Miklucho-Maclay in Haeckel, 1872) Clathrina arnesenae (Rapp, 2006) Clathrina aurea Solé-Cava, Klautau, Boury-Esnault, Borojevic & Thorpe, 1991 Clathrina beckingae Van Soest & De Voogd, 2015 Clathrina blanca (Miklucho-Maclay, 1868) Clathrina broendstedi Rapp, Janussen & Tendal, 2011 Clathrina camura (Rapp, 2006) Clathrina cancellata (Verrill, 1873) Clathrina ceylonensis (Dendy, 1905) Clathrina chrysea Borojevic & Klautau, 2000 Clathrina clara Klautau & Valentine, 2003 Clathrina clathrus (Schmidt, 1864) Clathrina conifera Klautau & Borojevic, 2001 Clathrina coriacea (Montagu, 1814) Clathrina cribrata Rapp, Klautau & Valentine, 2001 Clathrina curacaoensis Cóndor-Luján, Louzada, Hajdu & Klautau, 2018 Clathrina cylindractina Klautau, Solé-Cava & Borojevic, 1994 Clathrina delicata Fontana, Cóndor-Luján, Azevedo, Pérez & Klautau, 2018 Clathrina dictyoides (Haeckel, 1872) Clathrina fjordica Azevedo, Hajdu, Willenz & Klautau, 2009 Clathrina flexilis (Haeckel, 1872) Clathrina globulosa Cóndor-Luján, Louzada, Hajdu & Klautau, 2018 Clathrina helveola Wörheide & Hooper, 1999 Clathrina heronensis Wörheide & Hooper, 1999 Clathrina hispanica Klautau & Valentine, 2003 Clathrina hondurensis Klautau & Valentine, 2003 Clathrina insularis Azevedo, Padua, Moraes, Rossi, Muricy & Klautau, 2017 Clathrina jorunnae Rapp, 2006 Clathrina lacunosa (Johnston, 1842) Clathrina laminoclathrata Carter, 1886 Clathrina loculosa (Haeckel, 1870) Clathrina lutea Azevedo, Padua, Moraes, Rossi, Muricy & Klautau, 2017 Clathrina luteoculcitella Wörheide & Hooper, 1999 Clathrina macleayi (Lendenfeld, 1885) Clathrina maremeccae Van Soest & De Voogd, 2018 Clathrina multiformis (Breitfuss, 1898) Clathrina mutabilis Azevedo, Padua, Moraes, Rossi, Muricy & Klautau, 2017 Clathrina mutsu (Hôzawa, 1928) Clathrina nuroensis Azevedo, Cóndor-Luján, Willenz, Hajdu, Hooker & Klautau, 2015 Clathrina osculum Carter, 1886 Clathrina parva Wörheide & Hooper, 1999 Clathrina passionensis van Soest, Kaiser & Van Syoc, 2011 Clathrina pedunculata (Lendenfeld, 1885) Clathrina pellucida (Rapp, 2006) Clathrina peruana Azevedo, Cóndor-Luján, Willenz, Hajdu, Hooker & Klautau,