Material examined. Holotype: ZMUC-BRY- 103, fragment of colony, collected by a Canadian expedition research vessel, the Canadian Coast Guard Ship Martha Black at 60 ° 22.3 ' N, 48 ° 22.19 ' W, 886–932 m, March 2012. Paratype: ZIN – 1 / 50641, two parts of another colony, collection data as for holotype.
N Mean±SD Min-Max
Turbicellepora greenlandica sp. n.
Autozooid length 15 0.95 ± 0.05 0.82-1.06 Autozooid width 15 0.58 ± 0.04 0.55-0.65 Primary orifice anter width 8 0.13 ± 0.03 0.18 - 0.02 Primary orifice anter length 8 0.15 ± 0.02 0.15-0.16 Oral avicularium length 10 0.13 ± 0.02 0.13 - 0.02 Oral avicularium width 10 0.09 ± 0.01 0.09-0.10 Vicarious avicularium length 5 0.46 ± 0.01 0.45-0.47 Vicarious avicularium rostral width 5 0.31 ± 0.01 0.27-0.31 Vicarious avicularium postmandibular width 5 0.12 ± 0.07 0.11 - 0.01 Turbicellepora hansenae sp. n.
Autozooid length 8 0.84 ± 0.03 0.74-0.90 Autozooid width 8 0.62 ± 0.05 0.50-0.71 Primary orifice anter width 8 0.19 ± 0.02 0.17-0.22 Primary orifice anter length 8 0.16 ± 0.02 0.14-0.17 Oral avicularium length 8 0.21 ± 0.07 0.18-0.24 Oral avicularium width 8 0.13 ± 0.05 0.12-0.15 Vicarious avicularium length 1 - 0.42 Vicarious avicularium rostral width 1 - 0.33 Vicarious avicularium postmandibular width 1 - 0.11 Etymology. Alluding to the provenance of the species.
Description. Colonies partly laminar or lumpy, white, comprising small patches 30 x 40 mm in size. Zooids situated in horizontal plane or semi-vertical, rising in their distal part, convex, highly distinguishable because of deep interzooidal furrows (Fig. 1 a), large (0.8 –1.0 x 0.5–0.6 mm (Table 1). Frontal shield thin, weakly textured, with sparse marginal pores (Fig 1 b). Primary orifice transversely suboval, wider than long, the wide sinus occupying much of proximal border, with sloping sides (Fig. 1 c, e). Peristome raised, thin, lower midproximally and flanked by lateral lobes when fully formed (Fig. 1 b, d, f). Usually 1 peristomial oral avicularium, rarely 2, prominent, subcolumnar, with triangular mandible (Fig. 1 d, e); base of avicularian cystid oval, narrowing frontally to subconical, connected with zooids by a single pore. Avicularium surface inclined to orifice, its rostrum directed frontolaterally at angle of 45 º to zooidal frontal shield. Additional subcolumnar avicularia sporadically developed on frontal shields of autozooids at distal corners, not far from peristome; these of similar shape to oral avicularia (Fig. 1 b), but can be larger or smaller. Both avicularium types with crossbar lacking columella; rostra triangular, slightly hooked apically. Vicarious avicularia prominent, frequent, large, pyriform, with narrow proximal part and spatulate mandible; crossbar without columella but small protuberances may be seen on (Fig. 1 f). Ovicell prominent, subglobular on zooidal surface, slightly variable in form, being sometimes longer than wide, with 20–25 pseudopores (Fig. 1 d, f).
Distribution. Southern part of Davis Strait, southwest of Greenland, 886– 932 m.