(Fig. 27B)
Nectocrangon levior Rathbun, 1902a: 892; 1904: 143, figs. 86, 87. — Zarenkov 1965: 1764.
Argis levior. — Kozloff 1974: 164. — Wicksten 1976: 56, fig. 1.— Butler 1980: 89.
Diagnosis. Rostral tooth short. Carapace with 3 dorsal teeth posterior to rostral tooth, branchiostegal, pterygostomian teeth, hepatic tooth on each side. Eye small, partly concealed by hood. Antennular peduncle not as long as scaphocerite. Lateral tooth of scaphocerite slightly exceeding blade. Distal segment of third maxilliped flattened, with exopod. Pereopod 1 subchelate, dactylus closing obliquely against propodus. Pereopod 2 slender, chelate. Pereopod 3 slender, dactylus slender, acute. Pereopods 4, 5 stout, dactyls flattened. Abdominal somites 1–4 without carinae, somite 5 weakly carinate, somite 6 with 2 dorsal carinae; pleura rounded except for weak posterolateral point on fourth pleuron. Telson about as long as uropods, with 3 pairs dorsolateral spines, acute apex. Female total length 47 mm, male not reported.
Color in life. Not reported.
Habitat and depth. Sand, boulders and shell, 18–77 m.
Range. Aleutian Is. to Shelter Cove, Humboldt County, California. Type locality Admiralty Inlet, Puget Sound.