Genus Arachnanthus Carlgren, 1912

Diagnosis.

Arachnactidae with sterile protomesenteries; metamesenteries in duplets (M and B), long ( ‘M’) metamesenteries with gonads and a double mesenteric filament, short (B) betamesenteries sterile, with single, convoluted mesenteric filament; very long stomodeum; lacking a directive labial tentacle; cnidome with p-mastigophores and b-mastigophores (after Carlgren 1912, 1924, 1937 and den Hartog 1977).

Type species.

Arachnanthus oligopodus (Cerfontaine, 1891)

Valid species

Arachnanthus australiae Carlgren, 1937

Arachnanthus bockii Carlgren, 1924

Arachnanthus oligopodus (Cerfontaine, 1891)

Arachnanthus sarsi Carlgren, 1912

Arachnanthus lilith sp. n.

Distribution.

North Sea, Mediterranean Sea, Red Sea, East Australia, and Melanesia.