Acteocina sp.

Valdés, Ángel, 2008, Deep-sea “ cephalaspidean ” heterobranchs (Gastropoda) from the tropical southwest Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 587-792 : 711-712

Acteocina sp.

Figs 60E, 61

MATERIAL EXAMINED. — New Caledonia proper. VAUBAN: stn 40, 22°30’S, 166°24’E, 250-350 m, 1 dd Fig. 60E ). — BATHUS 2 :

stn CP 743, Passe de Boulari, 22°36’S, 166°26’E, 713-950 m, 5 dd; stn CP 755, Passe de Dumbéa, 22°22’S, 166°14’E, 495 m, 1 dd.

DISTRIBUTION. — Collected in New Caledonia (Fig. 61), in 350-713 m.

DESCRIPTION. — Shell morphology. Length 0.9 mm, width 0.5 mm (largest specimen examined). Shell fragile, oval, with convex sides (Fig. 60E). Body whorl forming the entire shell; spire not developed, formed by the protoconch only. Suture canaliculate. Protoconch unknown. Umbilicus closed. Aperture very long, about 4/5 of the shell length,

wider anteriorly and narrower posteriorly. Columellar margin thickened, oblique, with no callus. Sculpture of a number of simple spiral grooves, stronger near the anterior and posterior ends. Colour uniformly whitish.

Anatomy. Unknown. All shells collected lacked soft parts.

REMARKS. — Acteocina sp. could be a juvenile of another species of Acteocina , but it is here maintained as a distinct species until more material becomes available