FIGURE 1. Nicola tetela comb. nov. A-B in Nicola gen. nov. with redescription of Nicola tetela (Borojevic & Peixinho, 1976) (Porifera: Calcarea: Calcinea: Clathrinida)

FIGURE 1. Nicola tetela comb. nov. A-B: Live specimens: UFRJPOR 6714 (A) and UFRJPOR 6746 (B) (photos taken by E. Hajdu). C. Specimens after fixation (UFRJPOR 6714, 6723, 6724). D. Tangential section of the skeleton showing choanocytes and porocytes (pc). E. Detail of the apical region of the body. F. Apical actines protruding into the lumen of a tube (arrow pointing to one apical actine). G. Spicules: Triactine (left) and tetractine (right). H – K: SEM images of spicules: H. Large triactine. I. Small triactine. J. Tetractine. I. Apical actine of a tetractine. All skeleton and spicule images were taken from the specimen UFRJPOR 6723.