MUSEUxM OF COMPARATIVE ZOOLOGY. 265 



tion 232, St. Vincent, 88 fathoms. Station 233, St. Vincent, 174 fathoms. 

 Station 239, Grenadines, 338 fathoms. Station 240, Grenadines, 164 fath- 

 oms. Station 241, Grenadines, 1(33 fathoms. Station 269, St. Vincent, 124 

 fathoms. Station 270, St. Vincent, 75 fathoms. Station 272, Barbados, 76 

 fathoms. Station 277, Barbados, 106 fathoms. Station 283, Barbados, 237 

 fathoms. Station 290, Barbados, 73 fathoms. Station 296, Barbados, 84 fath- 

 oms. Station 297, Barbados, 123 fathoms. Bartlett, Station 5, 3.3 m. S. E. 

 by E. i E. from Santiago de Cuba Light, 288 fathoms. Station 316, 32° 7' N., 

 78° 37' 30" W., 229 fathoms. 



Ophiocamax fasciculata sp. nov. 



Plate VII. Figs. 93-94. 



Special Marks. — Disk covered with thin, small, smooth scales, of which 

 there are about ten radiating rows in each interbrachial space, and which are 

 beset by scattered, short, thin spines. Radial shields smooth and regular, and 

 joined their whole length. 



Description of an Individual (Station 209). — Diameter of disk 15 mm. 

 Width of arms close to disk 4.5 mm. About twenty-three long, smooth, 

 crowded mouth-papillae to each angle, arranged in two or three tiers. On the 

 upper part of the jaw-plate are about seven very short, blunt teeth, and, below 

 these, usually eight tooth-papilla? arranged in pairs. Often the teeth do not 

 stand immediately one above the other, but partly alternate. Mouth-shields 

 smooth and a little swollen, of a wide heart-shape with a slight lobe outward ; 

 length to breadth, 2 : 2. Side mouth-shields wide and meeting fully within. 

 Under arm-plates wide triangular, with a sharp angle within, rounded lateral 

 corners, and wavy sides. They are considerably swollen near the middle. 

 Side arm-plates stout, with a thick spine-ridge; they meet both above and 

 below. Upper arm-plates much rounded triangular, Avith the outer margin 

 swollen. Disk thick, flat on top and not constricted in the interbrachial 

 spaces. It is covered with thin, smooth overlapping scales, of which there are 

 ten or twelve radiating rows in each upper interbrachial space. Above, the 

 disk is beset with short, slender, smooth, tapering spines. Radial shields flat and 

 smooth, of a short pear-seed shape, and joined throughout. Length to breadth, 

 3 : 2. Six long flattened arm-spines bearing thorns on their two edges. The 

 second is often as long as three arm-joints, the third nearly as long as two, 

 and the fourth and fifth a little longer than one, while the uppermost and 

 lowest are shortest of all. Three and sometimes four spine-like tentacle-scales 

 to each pore, standing in a clump and turned inward. Color in alcohol, disk 

 gray; arms pale yellowish. 



A very fine specimen from Station 147 had a disk of 20 mm. and arms about 

 180 mm. long. There were usually but five spines, the uppermost short one 

 being wanting, while the second was sometimes as long as five joints. The 

 disk-scales were thicker than in the type, the basal tentacle-scales longer and 



