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Authority

(Leegaard) Kahl (1932: 503, fig. 81.13)

Class

Spirotrichea

Order

Strombidiida

Family

Strombidiidae

Additional References

Petz et al. (1995: 117)

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Basionym

Laboea emergens Leegaard (1915: 21, fig. 11)

Synonyms

N/A

Description

In vivo c. 95–110 × 60–65 µm; population of Leegaard (1915) 30–40 × 21–28 µm (fixed specimens). Body elongate-ellipsoidal, without a distinct apical protrusion. Peristomial field conspicuous; apical oral cavity separated from ventral surface by cytoplasmic wall. Equatorial kinety continuous ventrally. Ventral kinety not abutting equatorial kinety. Anterior adoral membranelles 14 or 15, continuous with 4 or 5 ventral membranelles that invaginate on anterior surface and form a closed circle in top view. Girdle of c. 12 µm long extrusomes subequatorial. Subpellicular platelet layer in posterior half of cell. Macronucleus 1; micronucleus 1. Movement: moderately fast.

Distribution

Ross Sea, in the region 71.00°–73.02°S and 135.00°–165.42°W, in sea-ice (Petz, unpublished data); Weddell Sea (Petz et al., 1995); North Atlantic, North Sea, Baltic Sea (Leegaard, 1915; Kahl, 1932).

Comments

N/A

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