Allotherenia sabulosa sp. nov.

(Fig. 19; Table 17)

Material examined. Holotype: MZUSP 762, near BIOTA Stn 205, 15 m. Paratypes: MZUSP 671, #1 [2 specimens], near BIOTA Stn 205, 15 m.

Etymology. From the Latin sabulosus, sandy; from sabulum sand.

Description. Colonies encrusting, unilaminar, on small mineral grains. Zooids relatively flat with regular small funnel-shaped pseudopores and 1–4 large marginal pores at the zooidal corners. Zooids have raised lateral edges, with distinct margin. Orifice almost circular with a shallow, subquadrate proximal sinus and small, downward sloping condyles. Peristome developed as a strong and conspicuous collar around the orificial fringe. Articulated oral spines absent. Avicularia absent. Ovicell hyperstomial, smooth ooecium, with raised proximal calcified band.

Remarks. A single colony of Allotherenia sabulosa sp. nov. was found on a sand grain from Station 211 and three additional specimens from near station 205.

Distribution. São Paulo state, Brazil.