NO. 1944. NEW GENERA AND SPECIES OF STARFISHES— FISUER. 639 



mm., r = 21 mm., R = over 4 r (small portion of tip of ray broken); 

 breadth of ray at mid-interbracliium, 24 mm. 



Tyjye.—C&t. No. 30547, U.S.N.M. 



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

 long. 122° 20' E), 559 fathoms; bottom temperature, 39.2° F. 



NYMPHASTER MESERES, new species. 



Similar in proportions and general form to N. arthrocnemis but 

 marginal plates not tumid (although ray is sharply four-angled) and 

 dorsal surface is subplane; sixth and sometimes fifth superomarginal 

 longer than width of dorsal surface (tenth in arthrocnemis); third 

 inferomarginal longer than width of its actinal surface; superomar- 

 ginal and inferomarginal two-jawed slender pedicellarige regularly 

 present. Width of ray at proximal end of first pair of superomar- 

 ginals which meet medially equalmg first 3^ to 3| superomarginals, 

 measured along ambitus; radial abactinal plates hexagonal to round- 

 ish; oral spines 9 to 11; furrow spines increasing from 5 or 6 to 10, 

 11, and 12 far along ray. K = about 60 mm., r = l7 mm., R = 3.6 r± ; 

 breadth of ray at mid-inter brachium, 19 mm. 



Type.— Cat. No. 30548, U.S.N.M. 



Type-locality. — Station 5115, off northern Mindoro (Verde Island 

 Passage), 340 fathoms. 



This species is most likely to be confused with N. arthrocnemis and 

 N. hahrotatus. It differs from the latter in having square-angled 

 rays, with a plane dorsal surface, a closer marginal granulation, the 

 sixth and sometimes the fifth superomarginal longer than width of 

 its dorsal surface (ninth or tenth in hahrotatus); 10 inferomarginals 

 corresponding to about 16 adambulacrats (13 or 14 in hahrotatus); 

 coarser actinal interradial granulation; fewer mouth spines (12 to 

 15 in hahrotatus); primary apical plates, smaller — not conspicuous, 

 whereas they are in hahrotatus. 



NYMPHASTER HABROTATUS, new species. 



Rays long and slender as in N. arthrocnemis, but not tumid, the 

 dorsal surface of ray evenly arched proximally, and oral spines 12 

 to 15; contour of ray as seen from below, even, not constricted at 

 intervals; breadth of raj at inner end of the first pair of superomar- 

 ginals which meet medially equal to first 3 to 3^ superomarginals 

 measured on ambitus; superomarginals, as seen from above •s\dder 

 than long up to the sixth or seventh; the next 2 or 3 squarish; 

 granules round and well spaced; a few marginal two-jawed pedicel- 

 larias; median radial plates slightly ^yider than long, all slightly 

 elevated; primary apical plates conspicuous; adambulacral plates 

 with proximally 7 or 8 and farther along ray upward of 14 furrow 

 spines; apophysis beginning on second or third plate, but becoming 

 prominent gradually; adambulacral two- to four- jawed pedicel- 



