. Bulletin - United States National Museum. Science. 98 BULLETIN 82, UNITED STATES NATIONAL MUSEUM separated. Tlie IBr. are rliombic with all the sides concave, and about as long as broad. The 10 arms are about 30 mm. long. P, is 6 mm. long, composed of 12 or 13 segments of wliich the first is about as long as broad, the second is about twice as long as broad, the third is about three tunes as long as broad, and the remainder arc somewhat longer. P2 is mm. long, similar to Pi and with the same number of slightl}' shorter segments. P3 and the following pinnules are shorter and slightly stou
. Bulletin - United States National Museum. Science. 98 BULLETIN 82, UNITED STATES NATIONAL MUSEUM separated. Tlie IBr. are rliombic with all the sides concave, and about as long as broad. The 10 arms are about 30 mm. long. P, is 6 mm. long, composed of 12 or 13 segments of wliich the first is about as long as broad, the second is about twice as long as broad, the third is about three tunes as long as broad, and the remainder arc somewhat longer. P2 is mm. long, similar to Pi and with the same number of slightl}' shorter segments. P3 and the following pinnules are shorter and slightly stouter with the distal edges of their segments everted and serrate, and with gonads. Distally the pinnules become very slender and increase somewhat in length. The color in alcohol is jn-llowish brown with the i)innules, cirri, and intcramhuhicral areas of the disk white. Locality.—Albatross station 3938; Hawaiian Islands; Laj-san Island Light bearing S. 88°30' E., miles distant; 270-298 meters; temperatm-e ° C; white sand and broken shells; May 16, 1902 [A. H. Clark, 1908, 1912, 1917, 1918] (1, , 22692).. Figure 7.—Argyrometra crispa {.\. H. Clark), holo- tj-pe, laterodorsal view. ARGYROMETRA MORTENSENI A. H. Clark Argyrometra morUnseni A. II. Clark, Journ. Washington Acad. Sci., vol. 7, 1917, No. 5, p. 128 (listed), p. 129 (diagnosis; comparison with A. crispa; locality); Proc. Biol. Soc. Washington, vol. 31, 1917, p. 41 (listed).—GisLfiN, Nova Acta Reg. Soc. Sci. Upsaliensis, ser. 4, vol. 5, No. 6, 1922, p. 130.— MoRTENSEN, Vid. Mcdd. Nat. Foren. K^benhavn, vol. 79, 1925, p. 386, p. 389 (locaUties; notes), fig. 66 ( and arm bases), p. 397 (listed).—Fell, New Zealand Science Congress, 1947, p. 210 Oisted); Tuatara, Wellington, New Zealand, vol. 3, No. 2, 1950, p. 79, text fig. 3 (calyx and arm bases), p. 84 (in key). Diagnostic features.—FI is shorter than P,, wliich is shorter than P3; there are 12 to 17 cirrus segments. The arms are about 3
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