NO. 1944. NEW GENERA AND SPECIES OF STARFISHES— FISHER. 607 



upper end and aboral margin; this is lacking on the terminal fourth 

 or fifth of ray. Inferomarginals with 3 or 4 conspicuous slender, 

 flattened, sharp lateral spines, and continuing this to the inner end of 

 plate are, on the proximal plates, 3 to 5 shorter, slenderer spinules. 

 The furrow spines are 3, rather long, the median slightly the longest, 

 flattened, saber-shaped, and pointed, the other 2 more cylindrical, 

 slenderer, tapering, and pointed. Subambulacral spines: Back of 

 the furrow series a slightly oblique longitudinal series of 3, the aboral 

 the largest, and usually longer than the median furrow spine; the 

 others are decreasingly shorter; back of these, 3 to 5 shorter, slen- 

 derer spinelets. Actinal intermediate plates few, with a tuft of 

 spinelets or a conical spiniform pedicellaria. 



ASTROPECTEN PEDICELLARIS, new species. 



Similar in general appearance to A. tenellus, but differing in having 

 abundant abactinal and adambulacral pedicellarise, as well as pedicel- 

 larise on supero- and inferomarginal plates, smaller paxillae, narrower 

 superomarginal plates, and more prominent lateral spines, which 

 are 4 in number except on outer third of ray, where 3 are present. 

 Kays long and slender; paxillar area narrow. 11 = 74 mm., r = 9 

 mm., R=8.2 r; breadth of ray at base, 9 to 10 mm. 



Type.— Cat. No. 30514, U.S.N.M. 



Type-locality. — Station 5424, Sulu Sea, off Cagayan Island, Caga- 

 yanes Islands, 340 fathoms, coral sand; bottom temperature, 50.4° F. 



The paxillse are similar to those of A. eremicus, with a central, 

 terete, blunt spinelet, usually as long as or a trifle longer than the 

 pedicel, and 8 or 9 similar ones in a peripheral series. Scattered over 

 the paxillar area are numerous conical pedicellarise with 3 to 6, taper- 

 ing, spiniform jaws which are slightly longer than the pedicels of 

 paxillae. Superomarginals of proximal three-fourths of ray with a 

 conical sharp spine about as long as the plate, and most of the plates 

 bear near the center a low dome-shaped fasciculate pedicellaria com- 

 posed of 4 to 8 slightly modified stubby spinelets. Lateral spines 4, 

 or 3 on outer third of ray; and on inner third, 1 or 2 shorter, slenderer, 

 but weU-developed spinules on the actinal surface. The uppermost, 

 or the second, is the longest and proximally equals 2| plates. Most of 

 the proximal plates bear a small fasciculate pedicellaria at the upper 

 end, near the base of the first spine; and on the ventral surface of 

 nearly aU the plates are 1 to 3 similar but larger pedicellariae. Furrow 

 spines 3, the median compressed and thin. Inner row of subambu- 

 lacral spines, 2 or 3, the aboral member enlarged, tapering, slender, 

 flattened, blunt-pointed, and a little longer than the median furrow 

 spine; behind these are 3 to 5 shorter spines. Instead of this arrange- 

 ment many plates have the subambulacrals nearly equal and grouped 

 to form a" pedicellaria with 4 to 6 jaws. 



