(Fig. 50F)
Chionoecetes angulatus Rathbun, 1894: 76 (part). — Rathbun 1925: 247, pls. 90, 91. — Garth 1958: 159, pl. I, fig. 7; pl. 16, fig. 1.
Chionoecetes tanneri. — Rathbun 1894: 76 (part).
Diagnosis. Rostrum small, teeth wide and inclined upward. Carapace broad, spinulous, pubescent, lateral margins partially concealed by expanded branchial regions; space between branchial regions shallow. Dorsal ridges of branchial region converging in straight lines, meeting in acute angle marked by large spine. Male cheliped longer than that of female; palm inflated, fingers narrow, curved. Pereopods 2–5 flattened, meri little dilated; dactyls long and slender. Male carapace length 24.6 mm, width 23.3 mm; female 26.4 mm, width 24.8 mm.
Color in life. Not reported.
Habitat and depth. Green mud, fine black sand; 90–3000 m but usually on continental slope, depth greater than 200 m.
Range. Bering Sea off Pribilof Is., Alaska to northwest of Cape Blanco, Oregon. Type locality south of Pribilof Is.