NKW STARFISHES FROM DEEP WATER <>FK CALIFORNIA AND ALASKA. 317 



and superomarginal series, either directly or by means of small intermediate ossicles, producing the 

 peculiarly large abactinal papular pores characteristic of this species. Superomarginal series perfectly 

 regular, the cruciform plates a little wider than long; between this series an. 1 the adambulacral plates 

 an inferomarginal and '■'• intermediate series present at base of ray (reduced to 2 on outer part and to 

 1 at tip), the plates forming regular transverse series as well as longitudinal; plates overlapping more 

 and more as they near the furrow, so that the papular areas are successively reduced until absent 

 toward the outer partof ray between the intermediate plates. <>n the miter portion of the ray the 

 ■ pen character of the abactinal skeleton is largely lust, the adradial plates becoming more regular as 

 the ray increases in tenuity. All the plates of the ray bearing a prominent spine, which is rather 

 shorter on the adradial than on either the radial or superomarginal series: these spines terete oi 

 slightly compressed, tapering ami pointed, ami increasing in size toward the adambulacral plates, 

 those of the inner actinal intermediate series being about n nun. long; median radial plates often 

 bearing an accessory spinule, their spines about 3 mm. long, tapering and blunt; general surface of 

 abactinal plates covered with small granules, widely scattered, but on the superomarginals spinelets 

 begin to appear, which increase in number and in length toward the furrow; fair-sized pedicellarise 

 numerous on abactinal surface, but greatly decreasing in number on -ides and actinal surface of ray; 

 these usually found about the border of the papular areas. Whole surface of the plates, granules, 

 spines, and spinelets covered with a thick, fleshy or jelly-like membrane, which is decidedly slimy in 

 life; this investment conspicuous, especially on the spinelets: each spinelet with a thick, clavate, 

 saccular sheath, with a rounded tip much larger than the spinelet, which is entirely hidden. On 

 account of the size of this pulpy sheath the spinelets appear closely crowded. The larger spines also 

 similarly invested, and appearing heavy and flattened; papulse numerous, conspicuous, vermiform, 4 or 

 5 to an area on abactinal surface and 1 or 2 on sides of ray: papuhe usually longer than the abactinal 

 spines; abactinal membrane frequently much wrinkled in alcohol, doubtless due to loss of water. 



The prominent adambulacral plates have a conspicuous furrow keel. Their armature is as follows: 

 I I ) on tip of furrow projection a short terete spinelet, often curved, bearing a large pedicellaria with 

 curved jaws, ami L' or .'! smaller companions, the latter sometimes absent; (L'l on the exposed surface 

 of the plate a transverse series of 3 or 4 slightly curved, tapering, pointed spinelets, which dimin- 

 ish in size as they proceed outward, the inner 2 subequal and standing on the actinal surface of the 

 furrow keel; 1 or L' shorter spinelets form an accessory transverse series along the adoral margin of 

 the plate: these actinal spinelets invested in a thick pulpy membrane, which entirely obscures the 

 outer spinelets of the series, giving them a blunt, clavate, papilliform appearance. The alternate non- 

 prominent plates have a small spinelet on the margin bearing a pedicellaria i smaller than that of adja- 

 cent plates), and on the actinal surface, in 2 transverse rows, are 4 spinelets, about the size of the 

 smaller spinelets of adjacent plates, and heavily invested with membrane. 



Madreporic body small, convex, situated near entrance to the interbrachial sulcus; anal opening 

 considerably to one side of center; terminal plate large, notched toward the terminal radial plate, 

 wiiler than the ray ju-t adorad, and bearing several small spines about the edge. 



Color in life, a "salmon" buff. 



Locality: Station 4517, Monterey Bay, Cal., 91(i fms., mud. 



Zoroaster (Myxoderma) evermanni, new species. 



Rays 5. R = 140mm.; r = ll mm. R = 12.7r. Breadth of ray at base, Ilium. 



Kays very long, and tapering gradually from a narrow base to a pointed extremity, which is capped 

 by a small terminal plate; disk convex', the abactinal surface considerably higher than carinal ridge of 

 ray; interbrachial angles very acute, the rays being frequently constricted at base. 



Primary radial and basal plates of disk stellate with short processes; papular areas smaller than 

 in the preceding species; primary apical plates bearing a central, short, pointed spine articulated to a 

 prominent boss on the plate, and the general surface armed with much shorter, delicate spinelets also 

 articulated each to a tiny granular prominence, and encased in a pulpy, thick membrane which covers 

 also the general surface of the plates; spinelets well spaced, but on account of the pulpy sheath appear- 

 ing fairly close together; median radial series of plates substellate, slightly larger than superomarginals, 

 and each bearing a central boss, surmounted by a prominent, tapering, sharp spine about 4 mm. in 

 length; plates of either adradial series smaller and irregular, but not so much so as in the preceding 



