MUSEUM OF COMPARATIVE ZOOLOGY. 227 



Amphiura semiermis Lym. 

 Amphiura semiermis. Bull. Mus. Comp. Zool. Vol. I. No. 10, p. 332. 1869. 

 Station 44, 539 fathoms, 4 specimens. 



Ophiocnida abnormis sp. nov. 



Plate II. Figs. 37-39. 



Special Marhs. — A wide mouth-papilla, occupying nearly the whole length 

 of the mouth-frame, on either side, with a group of four tooth-like i:)apilL.e at 

 the apex. 



Description of an Individual (Station 45). — Diameter of disk 4 mm. Length 

 of arm about 40 mm. Width of arm without spines 1 mm. A very wide 

 mouth-papilla on either side, occupying nearly the whole length of the angle, 

 and a group of four tooth-like j^apilla; at the apex. Mouth-shiekl wide heart- 

 shape, with the angle inward. Side mouth-shields short and wide, somewhat 

 swollen, broader without, tapering inward, where they nearly or quite meet. 

 Under arm-plates pentagonal, broader than long, with inner angle more or less 

 truncated, and outer edge gently curved. Side arm-plates small, slightly flar- 

 ing without, and just meeting below ; separated above by the upper arm- 

 plates, which are broad fan-shape, with an angle inward. Disk thin, slightly 

 puffed, covered above and below with small overlapping scales, and beset above 

 with a few blunt spines. Radial shields long, pear-seed shape, touching with- 

 out, separated within by a wedge of scales. Three short, stout, blunt, tapering 

 arm-spines placed close together. Two minute tentacle-scales on the basal 

 joints ; only one beyond. Color in alcohol, pale straw. 



Station 45, 101 fathoms, 1 specimen. 



Ophioenida olivaeea Lym. 



Ophiocnida olivaeea, Bull. Mus. Comp. Zoiil. Vol. I. No. 10, p. 340. 1869. 111. Catal. 

 Mus. Comp. Zool. VI. PI. I. Figs. 7, 8. 



Sigsbee, off Havana, 119 fathoms, 1 specimen. 



Ophiopsila fulva sp. nov. 



Plate II. Figs. 25 - 27. 



Special Marks. — Six or eight sharp mouth-papillro to each angle. Long, 

 very narrow, separated radial shields. Ten or twelve flattened arm-spines. 



Description of cm Individual (off Havana). — Diameter of disk 7.5 mm. 

 Width of arm withqut spines 1.8 mm. There are two or three long, flat, 

 tapering mouth-papilla; on either side of the mouth-angle, with two or three 

 shorter ones at the apex of jaw. Mouth-shield occupying almost the whole 

 mouth-angle, broad, swollen, heart-shaped, with a wide angle within. Side 

 mouth-shields rudimentary, situated close to the outer corners. Under arm- 

 plates narrow, four-sided, sliglitly swollen on the inner margin, lateral sides 

 straight, and a small notch on the outer edge. Side arm-plates curved on their 

 outer edge, meeting neither above nor below. Upper arm-plates very small, 

 longer than wide, and rounded. Disk slightly puffed and wrinkled, with 



