NO. 1944. ^'EW GENERA AND SPECIES OF STARFISHES— FISBER. 641 



Type-locality. — Station 5201, Sogod Bay, southern Leyte Island, 

 554 fathoms, gray sand, mud; bottom temperature, 52.8°. 



This species is named in honor of Dr. Hugh M. Smith, Deputy 

 Commissioner of Fisheries, in charge of the PhiUppine explorations. 



PELTASTER CYCLOPLAX, new species. 



Differing from P. nidarosiensis (Storm) in having entrenched, 

 2-jawed pincer-shaped or "sugar-tongs" pedicellariae instead of the 

 sessile, bivalved type; in having very many more gi-anules on the 

 abactinal plates, more tumid and longer proximal superomarginal 

 plates, and veiy numerous actinal intermediate pedicellarise; rays 

 longer. General form stellate, with short rays and shallow, arcuate, 

 interbrachia ; K = 109 mm,, r==51 mm., R=2.1 r; breadth of ray at 

 mid-interbrachium, 60 mm. Abactinal plates finely granulated, the 

 larger primary plates with 35 or 40 peripheral, and 120 central, 

 sUghtly smaller granules; proximal radial plates surrounded, partially 

 or wholly, by smaller, secondary, plates ; very numerous small abac- 

 tinal, broadly spoon-shaped, denticulate pedicellarige ; superomar- 

 ginals proximally very tumid, 15 or 16 to the ray, closely granulate 

 except for a central irregular, bare space on many plates; a few 

 superomarginal and inferomarginal pedicellarise; actinal intermediate 

 areas very large, closely granulate, nearly all the plates with 1 or 

 sometimes 2 forceps pedicellarige, so that in the aggregate they appear 

 very numerous, the plates being small; adambulacral plates with 5 

 or 6 stout, blunt, 4-sided or compressed furrow spines, and 2 arcuate 

 series of subambulacral spines (4 or 5 in each series) followed by 12 

 to 15 granules, in 2 crowded, irregular series. 



Ty'pe.—Ca.i. No. 30552, U.S.N.M. 



Type-locality. — Station 5279, China Sea, near Malavatuan Island, 

 Southern Luzon. 117 fathoms on a bottom of green mud. 



The pedicellarise of P. nidarosiensis are of the bivalve type charac- 

 teristic of Hippasteria, whereas in cycloplax they are of the entrenched 

 ,2-jawed sugar-tongs type, similar to those of NympJiaster, and other 

 related genera. If P. hehes Verrill is distinct from nidarosiensis, it 

 will differ in practically the same characters as that species. P. 

 planus Verrill lacks pedicellarise entirely, and has fewer abactinal 

 gi'anules to the plate, wider and less tumid superomarginal plates, 

 and only 3 or 4 furrow spines. 



SPILERIODISCUS SCOTOCRYPTUS, new species. 



In general appearance greatly resembling Ceranmaster granularis 

 (except as regards the enlarged antepenultimate superomarginals). 

 Differing from S. ammopMlus (Fisher) and S. hourgeti (Perrier) in 

 having much narrower superomarginals, more restricted papular areas, 

 much longer adambulacral plates with more numerous furrow spiaes, 

 48702°— Proc.N.M.vol. 43—12 il 



