MUSEUM OF COMPxVRATIVE ZOOLOGY. 233 



In other specimens the granulation was uninterrupted over the disk, except 

 small spots at the radial shields. The supplementary mouth-shield is often 

 very small, and ill marked. 



Ophiopaepale Goesiana Ljn. 



Station 101, Morro Light, 175-250 fathoms. Station 132, Santa Cruz, 115 

 fathoms (young). Station 127, Santa Cruz, 38 fathoms. Station 155, Mont- 

 serrat, 88 fathoms. Station 157, Montserrat, 120 fathoms. Station 253, Gre- 

 nada, 92 fathoms. Station 269, St. Vincent, 124 fathoms. Station 272, 

 Barbados, 76 fathoms. Station 293, Barljados, 82 fathoms. Station 297, Bar- 

 bados, 123 fathoms. 



Ophiozona marmorea sp. nov. 



Plate III. Figs. 10-13. 



Special Marls. — Arms very stout and short (two and a half times diameter 

 of disk), with strongly projecting side arm-plates and small sunken upper arm- 

 plates. Side mouth-shields much swollen. Lower interbrachial spaces with 

 scattered grains. 



Description of an Individual (Station 164). — Diameter of disk 8 mm. 

 Length of arm 19 mm. ^Vidth of arm next disk 2.3 mm. Five short, blunt, 

 crowded angular papillse to each mouth-angle, and, at the apex, the lowest of 

 the short teeth ; the outer papillte are largest. Mouth-shields small, much 

 larger than broad, five-sided with a curve without and an angle within ; length 

 to breadth, 1.2 : .8. Side mouth-shields larger than mouth-shields proper ; 

 much swollen, rudely triangular, and meeting fully within. First under arm- 

 plate small and pentagonal, with a long angle inward ; those beyond are much 

 larger, but still cover only about a third of the arm's width ; they are much 

 wider without than within, with a sharp peak on the outer corners, and re- 

 entering curves on the lateral sides ; length to breadth, 1.2 : .8. Side arm- 

 plates large and swollen, but meeting neither above nor below. Upper arm- 

 plates small and sunken, fan-shaped, with a truncated angle inward ; they cover 

 not more than a third of the upper surface. Disk covered by large, thick, 

 swollen rounded plates, with a central rosette of primaries and a radiating 

 row of three in each interbrachial space. Radial shields longer than broad, 

 rounded and swollen, separated by a wedge of two or three scales ; length to 

 breadth, 2.3 : 2 ; between their outer ends and the arm is a row of narrow 

 plates. Interbrachial spaces below covered on either side by stout genital 

 scales, and in the middle by a single row of two or three swollen plates ; they 

 bear a scattered granulation. Genital openings long, extending from sides of 

 radial shields to margin of disk. Four sliort, stout, tapering, blunt, equal arm- 

 spines, about two thirds as long as a joint. Two large oval tentacle-scales to 

 each pore. Color in alcohol, wliite. 



Station 101, 175-250 fatlioms, 1 specimen. Station 134, 248 fathoms, a 



