616 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 4S. 



on the distal plates; actinally narrower inferomarginal plates with 

 only 1 small actinal spine on a few proximal plates; shorter lateral 

 spines; more restricted actinal intermediate plates; adambulacral 

 pedicellarite; proxmially fewer subambulacral spmes; longer and 

 slenderer terminal plate. 



PERSEPHONASTER MULTICINCTUS, new species. 



Of the type of P. cingulatus Fisher and related to P. roidei Kcehler^ 

 from which it differs in having abactinal and marginal pedicellarise; 

 fewer paxillar spmelets; a slender appressed, central superomarginal 

 spine, forming a single longitudinal series along ray (not 2 conical 

 robust ones, forming 2 parallel series along ray); more numerous 

 furrow spines. Disk larger than in either cingulatus or roulei. R = 

 110 + mm. (tip of ray broken), r = 24 mm., Il=4.6 + r; breadth of 

 ray at base 28 mm. Interbrachia open; rays taperiiig veiy gradually; 

 height of ray at base less in proportion to width' than in cingulatus or 

 patagiatus. Paxillse small, with a low pedicel surmounted by a 

 flat-topped group of upward of 12 peripheral and 5 to 7 central 

 terete, blunt, spinelets as long as or slightly longer than height of 

 tabulum; scattered abactinal fasciculate or fasciculate-pectinate 

 pedicellarise with 2 to 10 spiniform jaws markedly stouter than 

 paxillar spinelets. Superomarginals over 40, shaped as in P. cingu- 

 latus, the median transverse line being covered \vith scale-like gran- 

 ules, the slopes on either side with tiny terete spinelets. Except for 

 6 or 7 interbrachial plates each plate bears near the middle 1 or 2 

 slender appressed, sharp flattened spinules (but forming a single 

 series along ray); several inconspicuous fasciculate pedicellarise 

 present on each plate. Inferomarginals with a lateral oblique comb 

 of 3 or 4 slender, flat, sharp appressed spines. Actual interradial 

 areas small, each triangle with about 10 or 12 slender, elongate 

 spmes and a veiy few fasciculate pedicellarise. Adambulacral plates 

 with a curved furrow margin, 9 furrow and 2 longitudinal series of 

 subequal slender, membrane-covered, rather fleshy, subambulacral 

 spines, about 5 in the inner series and 4 to 7 slightly shorter ones in 

 the second. 



Type.— C&t. No. 30524, U.S.N.M. 



Type-locality.— St&tion 5648, Buton Strait, Celebes (lat. 5° 35' S.; 

 long. 122° 20' E.), 559 fathoms, green mud; bottom temperature, 

 39.2° F. 



PERSEPHONASTER SULUENSIS, new species. 



Near P. multicinctus , but differs in having the superomarginal plates 

 with the transverse ridge between the center and aboral margin of 

 the plate, not in the center; inferomarginals appreciably broader, 

 with less crowded squamules;. furrow spines, 7 or 8; marginal fan 

 of mouth spines prominent, 5 to 7, nearly as long as first adambu- 



