266 BULLETIN OF THE 



more numerous, and the under arm-plates and spine-ridges more swollen. The 

 disk-spines were lew and scattered. 0. fasciculata stands between O. vitrea 

 and 0. hystrix; but the former has nine arm-spines and the upper arm set 

 with line points, while the latter has eight arm-spines and much coarser disk- 

 scales bearing coarse thorny stumps. 



Station 145, St. Kitts, 270 fathoms. Station 147, St. Kitts, 250 fathoms. 

 Station 148, St. Kitts, 208 fathoms. Station 209, Martinique, 189 fathoms. 

 Station 295, Barbados, 180 fathoms. 



Ophiocamax hystrix Lym. 



Station 1.34, Santa Cruz, 248 fathoms. Station 148, St. Kitts, 208 fathoms. 

 Station 157, Montserrat, 120 fathoms. Station 158, Montserrat, 148 fathoms. 

 Station 209, Martinique, 189 fathoms. Station 224, St. Vincent, 114 fath- 

 oms. Station 233, St. Vincent, 174 fathoms. Station 238, Grenadine.s, 127 

 fathoms. Station 241, Grenadines, 163 fathoms. Station 269, St. Vincent, 

 124 fathoms. Station 274, Barbados, 209 fathoms. Station 280, Barba- 

 dos, 221 fathoms. Station 291, Barbados, 200 fathoms. Bartlett, Station 5, 

 3.3 m. S. E. by E. i E. from Santiago de Cuba Light, 228 fathoms. Bartlett, 

 Station 29, 21° 23' 19" N., 82° 54' 42" W., 300 fathoms. 



Ophiothamnus vicarius Lym. 



Station 100, off Morro Light, 250-400 fathoms. Station 175 (young), Do- 

 minica, 611 fathoms. Station 190, Dominica, 542 fathoms (young), sp. ? 

 Plate VI. Fig. 88. Station 204, Martinique, 476 fathoms. Station 315, 32° 18' 

 20" N., 78° 43' W., 225 fathoms. Station 316, 32° 7' N., 78° 37' 30" W., 229 

 fathoms. 



OPHIOCOPA * gen. nov. 



Disk covered with fine imbricated scales, which may bear grains; and small 

 radial shields. Numerous close-set mouth-papillae, with teeth but no tooth- 

 papillse. Side arm-plates nearly meeting above and below. Some of the arm- 

 spines flattened and widened like an oar-blade. Two long genital openings in 

 each interbrachial space. 



Ophicopa spatula sp. nov. 



Plate VII. Figs. 95-98. 



Special Marks. — Five arm-spines, which, near base of arm, are flat and all 

 more or less widened. Five papilla: on each side of a mouth-angle, whereof the 

 outermost is widest. Gramdes on upper margin of disk. 



Description of an Individual. — Diameter of disk 9 mm. Width of arm 



* otpis, snake ; Kcitrri, oar. 



