FIG. 3. — Collarina balzaci (Audouin, 1826), NW Mediterranean: A, B, ovicelled and non-ovicelled zooids, note the abundance of large pseudopores (pelmata) on both the spinocyst and the ooecium; C, distal portion of a non-ovicelled zooid with no adventitious avicularia; D, distal portion of an ovicelled zooid, note the broader orifice, the shape of the apertural bar and the position of the adventitious avicularium; E, structure of the costate shield and the peripheral gymnocyst; F, adventitious avicularium with rostrum finely serrated, slightly hooked tip, and broad, rounded opesia; G, ancestrula with five spines, partly covered by filamentous microphyte. Origin: Marseille, Planier Islet, on Posidonia leaf. Scale bars: A, 200 µm; B, G, 100 µm; C-E, 50 µm; F, 25 µm.

Published as part of Harmelin, Jean-Georges, Bishop, John D. D., Madurell, Teresa, Souto, Javier, Spencer Jones, Mary E. & Zabala, Mikel, 2019, Unexpected diversity of the genus Collarina Jullien, 1886 (Bryozoa, Cheilostomatida) in the NE Atlantic-Mediterranean region: new species and reappraisal of C. balzaci (Audouin, 1826) and C. fayalensis Harmelin, 1978, pp. 385-418 in Zoosystema 41 (21) on page 390, DOI: 10.5252/zoosystema2019v41a21, http://zenodo.org/record/3725956