Chauliodoniscus armadilloides (Hansen, 1916)

Haploniscus armadilloides Hansen, 1916: 31 – 32; pl. 2, fig. 4a – d.— Gurjanova 1933: 402.— Wolff 1962: 55, 217, 259, 274.— Chardy 1974: 496, 523.

Chauliodoniscus armadilloides — Lincoln 1985a: 35.— Lincoln 1985b: 682 – 687, figs 16 – 17.—Kussakin 1988: 402 – 404, fig. 339. — Kavanagh 2009: 28.

Material examined. BIOICE stn. 2853, RV Bjarni Saemundsson, RP sled, 28 August 1995, 62°4030N, 16°5820W, 1833 m, 2.40°C, 1 specimen (IMNH 36844); BIOICE stn. 2859, RV Bjarni Saemundsson, RP sled, 29 August 1995, 61°5022N, 16°5286W, 2270 m, 2.37°C, 5 specimens (IMNH 36845); BIOICE stn. 2860, RV Bjarni Saemundsson, RP sled, 30 August 1995, 61°4343N, 16°5748W, 2295 m, 2.60°C, 3 specimens (IMNH 36846); BIOICE stn. 3012, RV Bjarni Saemundsson, RP sled, 7 July 1997, 61°2220N, 15°1898W, 2133 m, 3.29°C, 5 specimens (IMNH 36847); BIOICE stn. 3176, RV Bjarni Saemundsson, RP sled, 29 July 2000, 60°0203N, 22°2717W, 2537 m, 3 specimens (IMNH 36848); BIOICE stn. 3280, RV Bjarni Saemundsson, RP sled, 16 September 2001, 62°5350N, 15°5560W, 1692 m, 2.85°C, 1 specimen (IMNH 36849); BIOICE stn. 3538, RV Bjarni Saemundsson, RP sled, 10 September 2002, 62°2450N, 14°1355W, 1516 m, 2.57°C, 1 specimen (IMNH 36850).

Remarks. Chauliodoniscus armadilloides was found at seven stations. Six of these stations were located near the type locality (63°08’N, 15°40’W, 1301 m, Hansen 1916) in the Iceland basin south of the Iceland-Faeroe Ridge, and the seventh locality is in the southwestern part of the Iceland basin, somewhat deeper (2537 m) than the other stations (Fig. 12 B). Other records are from the Rockall Trough and the Porcupine Seabight in depth down to 3550 m (Lincoln 1985b) and from the North Atlantic at 36°to 45°N, at depths between 3663 and 5240 m (Chardy 1974). Harrison (1989) found this species to be the second most common species at the Permanent station in the southern Rockall Trough .