116 bulletin: museum of comparative zoology. 



Salenia cincta A. Ag. and Clark. 



This handsome species is closely related to Pallersoni A. Ag., but is easily dis- 

 tinguished by the coloration. The test and secondaries, and especially the abac- 

 terial system, are deep purple or greenish more or less tinged with purple. The 

 primaries are white, more or less distinctly shaded with green on the upper side, 

 with 12 to 16 broad rings of dull red. The sculpturing of the abactinal system 

 is quite different from that of Pattersoni, and tridentate pedieellariae seem to be 

 wanting. The largest specimen is 12 mm. in diameter, and the longest primaries 

 measure 52 mm. The latter are very slender, scarcely a millimeter in diameter, 

 and are distinctly verticillate, though nearly smooth. 



Station 4893. Southwest of Goto Islands, Japan, 95-103 fathoms. 



" 4891. Southwest of Goto Islands, Japan, 95 fathoms. 



" 4895. Southwest of Goto Islands, Japan, 95 fathoms. 



" 4934. Off Kagoshima Gulf, Japan, 103-152 fathoms. 



" 4936. Off Kagoshima Gulf, Japan, 103 fathoms. 

 Twelve specimens. 



ARBACIADAE Gray. 

 Coelopleurus maculatus A. Ag. and Clark. 



The specimens of Coelopleurus in the collection show no diversity in color or 

 other features, and are strikingly handsome, with polished green primary spines con- 

 spicuously spotted on the upper side with scarlet red. The lower side is white, with 

 somewhat indistinct red markings, as though the spots on the upper side showed 

 through. Towards the tip of the spine, on the upper side, the red spots become 

 confluent, so that the distal part of the spine is red for a greater or less distance, 

 though it may be tipped with green or white. The primary spines are sharply 

 triangular, especially near the base, and are distinctly curved towards the tip. The 

 collar is short, rarely over five millimeters in length, dull and usually rough with 

 four or five longitudinal series of coarse granules, on each side. The small actiual 

 primary spiues are flat and smooth, pure white, with very conspicuous gray collars 

 extending half their length. — These specimens agree perfectly with the specimens 

 taken by the " Challenger" at Amboina, and with others in the Museum collection 

 from Uraga Channel, Japan, hitherto referred to C. Maillardi. It seems to be 

 necessary, however, to distinguish them from that species, for in the type speci- 

 men of Maillardi from Bourbon, the primary spines are marked with deep purple 

 and the collar is 8 mm. in length, and very finely and uniformly granular. More- 

 over, the secondary spines in maculatus are stout and blunt, rarely having a sharp 

 point, while in Maillardi they are strikingly acicular. The largest specimen of 

 maculatus before us measures 37 mm. in diameter; the primaries are all broken, 

 but in other specimens they are three or four times the diameter of the test. 



Station 48S1. Eastern channel, Korea Strait, 40-59 fathoms. 

 " 4937. Off Kagoshima Gulf, Japan, 58 fathoms. 



Five specimens. 



