MUSEUM OF COMPARATIVE ZOOLOGY. 277 



have a transverse oval shape, and are separated by a group of five tubercles 

 arranged in two rows, while the supplementary corner jiiece has become as 

 large as the plate (Fig. 12G). At the Ijase of the arm the same arrangement 

 prevails; but the upper plate is proportionately smaller and less regular, while 

 the intermediate tubercles, from three to five in number, are conspicuous 

 (Fig. 125). Disk small, and strongly contracted in the interl:irachial spaces. 

 It is covered by large radial shields which are much longer than wide and 

 microscopically tuberculous; length to breadth, 2.2 : 1. In tlie centre of the 

 disk is a live-sided space covered by closely soldered plates and tubercles, frum 

 which radiate five brachial and five interbrachial narrow spaces; the latter cov- 

 ered by plates, the former by plates bearing large tubercles. Lower inter- 

 brachial spaces covered by small, swollen, closely soldered j^lates. Two short, 

 stout, flattened arm-spines not more than half as long as a joint, and growing 

 wider at the end. At tip of arm there is but one spine. One round tentacle- 

 scale. Color in alcohol, above variegated with shades of yellowish brown and 

 with some of the tubercles white; below lighter with a broad longitudinal arm- 

 band of purplish. 



Station 132, Santa Cruz, 115 fathoms. Station 203, Martinique, 96 fathoms. 



This species, with the top of its arm covered by polished beads of various 

 colors, presents a curious aspect. It is readily distinguished from H. pustidata 

 by the persistence of the upper arm-plate; and by having tubercles, instead of 

 of a smootli mosaic, on tlie upper side of the arm. 



Hemieuryale pustulata Lym. 



Station 132, Santa Cruz, 115 fathoms. Station 203, Martinique, 96 fathoms. 

 Station 276, Barbados, 94 fathoms. Station 277, Barbados, 106 fathoms. Sta- 

 tion 296, Barbados, 94 fathoins. 



Sigsbeia murrhina Lym. 



Station 132, Santa Cruz, 115 fathoms. Station 155, Montserrat, 88 fothoms. 

 Station 156, Montserrat, 88 fathoms. Station 157, Montserrat, 120 fathoms. 

 Station 166, Guadeloupe, 150 fathoms. Station 203, Martinique, 96 fathoms. 

 Station 209, ]\Iartinique, 189 fathoms. Station 210, Martinique, 191 fath- 

 oms. Station 211, Martinique, 357 fathom.s. Station 219, St. Lucia, 151 

 fathoms. Station 220, St. Lucia, 116 fathoms. Station 222, St. Lucia, 422 

 fathoms. Station 224, St. Vincent, 114 fathoms. Station 232, St. Vincent, 

 88 fathoms. Station 233, St. Vincent, 174 fathoms. Station 238, Grenadines, 

 127 fathoms. Station 241, Grenadines, 163 fathoms. Station 247, Grenada, 

 170 fatlioms. Station 249, Grenada, 262 fathoms. Station 269, St. Vin- 

 cent, 124 fathoms. Station 277, Barbados, 106 fathoms. 



