(Fig. 10H, I)
Pasiphae glacialis Buchholz, 1874: 279, pl. 1, fig. 2.
Hymenodora glacialis. — Faxon 1895: 168. — Kobyakova 1937: 99, fig. 3. — Havens & Rork 1969: 19. — Crosnier & Forest 1973: 84, fig. 25b. — Butler 1980: 72. — Krygier & Pearcy 1981: 86. — Chace 1986: 42, figs. 21K–O. — Hendrickx & Estrada-Navarrete 1989: 115. — Hendrickx & Estrada-Navarrete 1996: 117, fig. 72. — Wicksten 2002: 136.
Diagnosis. Similar to H. frontalis except exoskeleton membranous, finely pitted. Anterior part of carapace swollen, rostrum barely longer than eye, lower margin convex, with 2–5 dorsal, 0–1 ventral teeth. Carpus of pereopod 1 with conspicuous distal tubercle. Telson with 5–6 pairs dorsolateral spines. Male total length 48 mm, female 45 mm. Havens & Rork (1969) provided a comparison of H. glacialis and H. gracilis.
Color in life. Blood red.
Habitat and depth. Pelagic, rarely near surface in polar seas but more common at 350–1000 m; at 2000–5610 m off Oregon.
Range. Sea of Okhotsk and Bering Sea to Gulf of Panama, Chile and sub-Antarctic Pacific, Arctic region, North Atlantic; western South Atlantic, southwestern Indian Ocean. Type locality eastern Greenland, 74 ˚ N, near edge of pack ice.