1) Genus of clathrinidae 
Clathrina is a genus of calcareous sponge in the family Clathrinidae. Several species formerly in Clathrina were transferred to the newly erected genera Arthuria, Ernstia, Borojevia, and Brattegardia in 2013. The name is derived from the Latin word `clathratus` meaning `latticed`. Calcinea in which the cormus comprises anastomosed tubes. A sta...