Sabatieria pumila sp. n. (Figs 16-18, Table 4) Material examined. Holotype male (NIWA 865999), collected 5 October 2001, Chatham Rise crest (350 m water depth), 43.4333 °S, 178.5000°E. Characteristics of surface sediment layer (0–5 mm): mostly fine sand (35.7 %), silt/ clay (33.0%), and very fine sand (23.5 %); calcium carbonate content: 40.5 %; total organic matter content: 4.5 %; chloroplastic pigment concentration: 3359 ng /gDW sediment. Three male and three female paratypes (NIWA 866000), same data as holotype. Etymology. The species name is derived from the latin pumilus (= dwarfish, little), and refers to the small size of this species relative to most other species of the genus. Description. Male Body short, cylindrical, tapering slightly towards anterior extremity. Cuticle with transverse rows of dots, lateral differentiation consisting of transverse rows of larger dots. Two dorso- and two ventro-lateral rows of short, sparse somatic setae, some associated with inconspicuous, elongated hypodermal glands (Fig. 18 A). Head slightly set-off by depression at level of fovea amphidialis. Six minute inner and outer labial papillae and four short cephalic setae. Anterior portion of buccal cavity small, cup-shaped, posterior portion narrow. Fovea amphidialis spiral, 3.5 turns, located immediately posterior to cephalic setae. Marginal tubes arising from base of buccal cavity and extending to posterior end of pharynx. Pharynx gradually widening from middle of region of pharynx towards posterior, not forming a true bulb, cardia short, 5 µm long. Nerve ring at about middle of pharynx length. Secretory-excretory system present, cellular body of ventral gland at level of intestine, pore situated 0.5 –1.0 cbd posterior to nerve ring. Intestine wall with numerous small, colourless granules. Reproductive system diorchic with outstretched testes. Anterior testis on left of intestine, posterior testis on right of intestine. Mature sperm cells elongated, nucleated, 5–6 µm diameter, 12–13 µm long. Spicules paired, equal, ...