338 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Adambiilacral armature similar to that of granulosus but there 

 are 9 to 10 furrow spines instead of 7 or 8. Two to 4 forcipiform 

 pedicellariae monopolize the surface of the plate, except for a few 

 granules and a short pointed spine or two in place of pedicellariae. 

 On the outer third of ray there is a well-developed pointed sub- 

 ambulacral spine, sometimes with a small companion, and usually 

 but 1 pedicellaria just back of the proximal furrow spine. Mouth 

 plates similar to those of granulosus, with 15 or 16 marginal spines, 

 1 fairly well developed pointed suboral spine near the inner end of 

 the plate, 5 or 6 scattered pedicellariae and rather widely spaced 

 granules, the 5 or 6 nearest the median suture being largest. 



Madreporic body flat, circular, with radiating branched striae. 



Type.—Q2,t. No. 30560, U.S.N.M. 



Type-locality. — Station 5301, China Sea, vicinity of Hongkong 

 (lat. 20° 37' N.; long. 115° 43' E.), 208 fathoms, gray mud, sand; 

 bottom temperature 50.5° F. 



Remarks. — This species differs fr,om A. cristatus and A. sarissa 

 in the absence of inferomarginal spines, and in having much coarser 

 superomarginal granules, heavier marginals, shorter rays, thicker 

 abactinal integument, more numerous actinal intermediate granules, 

 and in numerous other details of armature. It differs from A. epix- 

 anthus in having coarser and more numerous abactinal granules, 

 numerous abactinal and actinal intermediate pedicellariae, more 

 numerous and slejiderer furrow spines and oral spines, more com- 

 pactly placed superomarginal granules (which, however, in epix- 

 anthus form a central, though sparser, group), heavier superomar- 

 ginals distally and numerous subambulacral forcipiform pedicel- 

 lariae. The abactinal granulation and pedicellariae will alone sep- 

 arate the two species, the granules of epixanthus being microscopic 

 and very widely spaced, and the bivalved granuliform pedicellariae 

 being absent. 



ANTHENOBDES RUGULOSUS Fisher. 



Plate 85, fig. 4 ; plate 88, fig. 4 ; plate 90, fig. 1 ; plate 94, figs. 5, 5a-&. 

 Anthcnoides nifjitlosus Fisher, 1913a, p. 648. 



Diagnosis. — Differing from A. granulosus in having longer, slenderer 

 rays, narrower marginal plates, rather more numerous and smaller 

 wm'/o^'m abactinal granules, a fine superomarginal granulation (except 

 for a few central coarse hemispherical granules on the proximal plates) 

 and more elevated, pincer-shaped abactinal pedicellariae. K=124 

 mm., r=47 mm., R=2.6+r; breadth of ray at first superomarginal, 

 52 mm. Disk large, rays distally narrow, tapering arcuately from 

 wide interbrachia ; disk more or less inflated; whole body overlaid 

 by smooth, rather thick, soft skin, minutely wrinkled on the abactinal 

 area and covering a fine, close, uniform granulation; small forceps- 



