Euonyx xarifa sp. nov.

(Figs 13–15)

Types. Holotype, female, 10.7 mm, AM P.68882, east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m, epibenthic sled, 22 August 1988, P.A. Hutchings et al., RV Franklin [FR0688-14]. Paratype, male, 8.5mm, AM P.68883, same collection details as holotype.

Type locality. East of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m.

Etymology. Named for the pearling lugger ‘Xarifa’ one of the fleet wrecked off Cape York (probably Thursday Island) during the severe cyclone Mahine on 4 March 1899; used as a noun in apposition.

Description. Based on holotype, female, 10.7 mm, AM P.68882. Head lateral cephalic lobes small, rounded; eyes apparently absent. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 4-articulate, terminal article large, offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate. Mandible incisor very reduced, left and right slightly asymmetrical; molar an asetose flap; palp attached distally, article 2 with central bulge. Maxilla 1 outer plate setal-tooth 7 present, not cuspidate; palp distal margin with apical robust setae. Maxilliped outer plate without apical robust setae.

Gnathopod 1 chelate; coxa vestigial, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly convex; dactylus simple. Gnathopod 2 propodus palm slightly acute. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus.

Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate. Urosomite 1 not projecting over urosomite 2, with rounded boss. Uropod 2 inner ramus without constriction. Peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft, or moderately cleft.

Depth range. 1770–1863 m.

Remarks. See remarks under E. chelatus.

Distribution. Australia. Queensland.