Nausithoe albatrossi (Maas, 1897)

Nauphanta albatrossi Maas, 1897: 83, pl. XIV.

Nausithoe albatrossi — Vanĥffen, 1902: 29.

Holotype not known, possibly not extant.

Material examined: None.

Diagnosis: medusa—isodome bell with gastric filaments organized in 16 clusters of 5 filaments each.

Description: Based on Maas (1897), Bigelow (1928), Mayer (1910), and Kramp (1961). Adult medusa 35 to 40 mm in diameter and 35 mm high; narrow and elongate lappets, with rounded ends; smooth central disc; gonads oblong; gastric filaments organized in 16 clusters of 5 filaments (4 clusters per quadrant, a total of 80 filaments). No information about the rhopalia. No information about a polyp stage.

Type locality: Gulf of Panama (no information on depth).

Distribution: Pacific coast of South America.

Remarks: The organization of gastric filaments is not seen in any other species of the genus.