. Bulletin - United States National Museum. Science. 264 BULLETIN 75, UNITED STATES NATIONAL MUSEUM. Although the general appearance of these specimens is quite dis- tinctive, and trifid stumps appear to be wholly wanting, the indi- cations of a longitudinal white stripe on the upper side of the arms make me suspicious that this is only an extreme variety of Icoreana. Observations on an extended series of living specimens at Misaki would very easily settle the matter. OPHIOTHRIX PANCHYENDYTA, new Disk 11 mm. in diameter; arms about 35 to 40 mm. long, probably. Disk thickly covered wi
. Bulletin - United States National Museum. Science. 264 BULLETIN 75, UNITED STATES NATIONAL MUSEUM. Although the general appearance of these specimens is quite dis- tinctive, and trifid stumps appear to be wholly wanting, the indi- cations of a longitudinal white stripe on the upper side of the arms make me suspicious that this is only an extreme variety of Icoreana. Observations on an extended series of living specimens at Misaki would very easily settle the matter. OPHIOTHRIX PANCHYENDYTA, new Disk 11 mm. in diameter; arms about 35 to 40 mm. long, probably. Disk thickly covered with nearly smooth, cylindrical spines, blunt and. Fig. 131.âOphioturix panchyendyta. a, from above, X 5; b, from below, X 5; c, side view of TWO arm joints near disk, X â ">; d, an upper arm plate, x l^'J; e, an under arm plate, X 15; /, A tentacle, X 15. rough at tip. Radial shields very large, smooth, nearly free from spines, in contact at inner, distal corner, but elsewhere separated by a narrow series of scales bearing numerous small spines. Upper arm plates (fig. 131<^) rhombic, coarsely granular, a little swollen, wider than long, in contact throughout; the first one carries a tubercle on which is borne a conspicuous spine. Interbrachial spaces below fully covered with scales and spinelets like those of disk. Oral shields, adoral plates, and under arm plates rather indistinct (as o IJaj-yu, signifying wholly, and ivduTog, signifying clothed, in reference to the inter- brachial spaces belov^r being entirely covered with scales and 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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