. Bulletin - United States National Museum. Science. NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 227 upper iirni plates, the arm spines, and the oral papillae, its characters are so unique I have no hesitation in making it the type of a new species. I would call particular attention to the huge, si)iniform oral papillae; the very large first under arm plate widely separated from second; the absence of tentacle scales, and the very charac- teristic lower arm spines. OPHIACANTHA HYLACANTHA, new species.⢠Disk 11 mm. in diameter; arms about 60 mm. long. Disk c-overed by numerous stout, poi
. Bulletin - United States National Museum. Science. NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 227 upper iirni plates, the arm spines, and the oral papillae, its characters are so unique I have no hesitation in making it the type of a new species. I would call particular attention to the huge, si)iniform oral papillae; the very large first under arm plate widely separated from second; the absence of tentacle scales, and the very charac- teristic lower arm spines. OPHIACANTHA HYLACANTHA, new species.⢠Disk 11 mm. in diameter; arms about 60 mm. long. Disk c-overed by numerous stout, pointed, rough spines, nearly or quite a milli-. FiG. lot).âOpiuacantha hvlacantha. X n,rROM above; b, from below: r, sike mew of two ARM JOINTS NEAR DISK. meter long. Among the spines arc scattered coarse granules, but whereas the spines are chiefly near the center of the disk, the gran- ules are chiefly marginal, particularly distal to the radial shields. Radial shields large, well separated, rather longer than wide, bare and smooth. Upper arm plates more or less triangular, as long as wide or longer; basal ones in contact, but farther out they are sep- arated; some basal ones bear marginal granules, as in normani. "â "rXij, pigniiying forest, and uKavda, signifying spine, in reference to the forest of spines on the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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