Onchimira Martynov, Korshunova, Sanamyan & Sanamyan, 2009, gen.nov.

Onchimira gen.nov.

Type Species: Onchimira cavifera gen. et sp. nov.

Diagnosis. The notum is soft and almost smooth, relatively broad, usually covered with very short tubercles. The integument contains a sparse network of spicules. The rhinophores are lamellate. The rhinophoral pockets have well defined contractile sheaths with smooth edges. The gills are unipinnate united by a common membrane into a circle around the anus, and are retractable into a common true gill cavity. The gill cavity border is moderately raised and has a smooth edge, which is capable of closing entirely over the gills. The oral veil is well defined, trapezoid, with oblique lateral sides and a convex anterior edge. The foot is broad, not bilobed anteriorly, slightly narrowed posteriorly. The labial cuticle contains dark rods with bent tips. The buccal pump is large, sessile, fully banded medially by a broad peripheral muscle. The salivary glands are elongate. The radula formula is 7–9.1.1.1.9–7. The central teeth are small and rectangular. The first lateral tooth is large, beak-shaped, bearing small faint denticles. Further lateral teeth are small and elongate. The stomach is relatively large, a caecum is absent. The male part of the reproductive system comprises a small single looped prostate, a moderately sized muscular vas deferens and a large, distinctly swollen penis, which contains a smaller evertable part. The penis is not armed. The ampulla bifurcates into a vas deferens, uterine duct and oviduct. The bursa copulatrix is small and rounded. The seminal receptacle does not represent a separate structure; instead it is formed by a swollen terminal part of the vagina, which is wide, massive and moderately convoluted.

Etymology. From onchi in referring to the family Onchidorididae and mira (Latin), = remarkable, extraordinary. Onchimira is a noun of feminine gender.

Remarks. See under species description.