1/9 
2. Pcrissometra sclene (A. H. Clark). 
A. II. Clark. Proc. U.S. National Museum, vol. 39, 1911, p. 556 (Packylometra selene). 
0- 
;. Perissonietra gorgonia sp. nov. 
Stat. 254. 5°40'S., 132° 26' E. Arafura Sea. 310 Metres, i Ex. 
Stat. 294. io°i2'.2S., I24°27'.3E. Timor Sea. 73 Metres. 1 Ex. 
The centrodorsal is small, apparently conical, the cirrus sockets arranged in ten closely 
crowded columns. 
The cirri are XXIV, 19 — 24 (usually 21), 25 mm. to 40 mm. (usually 30 mm. to 35 mm.) 
long; the segments are very uniform in length, the sixth or seventh and following being .slighdy 
longer than broad ; the distal edges of the segments are slightly prominent, and the distal edges 
of tho.se in the outer half are slightly thickened on the dorsal side. The cirri are relatively 
larger and stouter than those of P. selene. 
The ends of the basal rays are visible as very large rhombic or rounded triangular low 
tubercles or flat areas in the angles of the caly.x. The radials are concealed. The IBr, are 
e.xtremely short, in the angles of the calyx running far upwards and meeting over the ends 
of the basal rays; they bear a low broad median tubercle. The axillaries are rhombic, about 
two and one half times as broad as long; except in the median line their edges, like those 
of the IBr^, are slightly everted; they bear a large low broad median tubercle. 
The 20 arms are about 170 mm. long; all ten of the IIBr series are 4 (3 +4); each 
of the component ossicles carries a low rounded median tubercle, and has slightly thickened 
edges all around. The earlier brachials have slitjhtlv thickened and more or less everted distal 
edges, which as the brachials become triangular change to simple overlapping distal ends; 
traces of a low rounded median tubercle may be found at least as far as the end of the 
proximal third of the arm. 
The specimen from Stat. 254 has 17 arms 130 mm. long; five of the IIBr series are 
4 (3 + 4) and two are 2; the cirri are rather slender, XX\\ 14—16, 16 mm. long. 
4. Perissometra patula (P. H. Carpenter). 
P. H. C.'VRl'ENTER. "Challenger" Reports. Comatulae, 1888, p. 219, pi. 43 {Anledon patula). 
Bell. Journ. Linn. Sec. (Zool.), vol. 24, 1893, p. 341, [Antcdon patula). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 48 {Packylo- 
metra patula). 
5. Pcrissometra rodusta (P. H. Carpenter). 
P. H. Carpe.NTER. -Challenger" Reports. Comatulae, 18S8, p. 220, pi. 44, figs, i (AnlfUon 
robusta). 
Bell, journ. Linn. Soc. (Zool.), vol. 24, 1893, p. 341 [Antcdon patula, part). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 49 Fachylo- 
metra robusta). 
Stat. 297. io''39 S., i23°4o'E. Timor Sea. 520 Metres. 2 Ex. 
One of the specimens has the cirri 55 mm. to 70 mm. long, composed of 28 — 31 
