. Bulletin - United States National Museum. Science. NORTH PACIFIC OPHIUEANS IN NATIONAL MUSEUM CLARK. 29 square millimeter; those at center of disk are longer and more like spinelets than those near margin. Radial shields entirely concealed. Upper arm plates triangular with, proximal angle more or less trun- cated, according to amount of contact between them. Interbrachial spaces below covered with papilla-like granules, which become spine- lets near and around oral shields and on oral plates; these spinelets are very little larger than those at center of disk above. Oral shields ellipsoidal,
. Bulletin - United States National Museum. Science. NORTH PACIFIC OPHIUEANS IN NATIONAL MUSEUM CLARK. 29 square millimeter; those at center of disk are longer and more like spinelets than those near margin. Radial shields entirely concealed. Upper arm plates triangular with, proximal angle more or less trun- cated, according to amount of contact between them. Interbrachial spaces below covered with papilla-like granules, which become spine- lets near and around oral shields and on oral plates; these spinelets are very little larger than those at center of disk above. Oral shields ellipsoidal, wider than long. Adoral plates rather small, much longer than vnde, widest distally, their outlines more or less obscured by spinelets. Oral papillae four or five on each side with often an infra- dental one in addition; outermost very much the widest. Teeth four or five, not peculiar. First under arm plate much smaller than sec- ond, distinctly wider than long; second and succeeding plates more or less pentagonal with a wide proximal angle; seventh and succeeding plates usually wider than long and widely separated from each other; those preceding the seventh are often longer than wide and only slightly or scarcely separated from each other. Side arm plates rather large, meeting slio'htly above and more fig. 4.—opmocoNis papillata. xo. a, from above; 6, from ^, , ,, , , below; c, sroE view of an arm joint near disk. or less broadly below; each plate carries six or seven long smooth, rather blunt, hollow spines, the uppermost or next to it, the longest, and, at base of arm, equalling or exceeding two joints. Tentacle scale single, very large, about as wide as long. Color (dried from alcohol), very pale fa^\^l or yellowish-bro\\Ti; beneath and arm spines, nearly white. Localities.—Albatross station 2842, off Aleutian Islands, lat. 54° 15' N.; long. 166° 3' W., 72 fathoms, pebbles, bottom temperature 41°, ten specimens; station 3315, Bering Sea, lat. 54° 2' 40" N.; l
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
