MUSEUM OF COMPARATIVE ZOOLOGY. 29 



Amphiura glauca sp. nov. 



Plate XII. Figs. 326-3S8. 



Special Marks. — Four mouth-papillse on each side. One tentacle-scale mi- 

 nute and like a lip. Four slender arm-spines. Radial shields long and narrow, 

 and diverging inward. Disk naked below. 



Description of an Individual (Station 232). — Diameter of disk 5.5 mm. 

 Width of arm close to disk 1 ram. Four short pointed mouth papillae on each 

 side of the mouth-angle, of which that at the apex is much the largest and 

 most rounded. Mouth-shield small, with a rounded angle inward, and outer 

 edge curved. Side mouth-shields small, long triangular, somewhat curved, just 

 meeting within. Under arm-plates small, longer than wide, with re-entering 

 curves on the lateral sides, outer corners rounded and a truncated angle within. 

 Side arm-plates small and little projecting, meeting neither above nor below, 

 till some distance out on the arm. Upper arm-plates small, a little broader 

 than long, bounded within by a deep curve, and without by a gentler one, hav- 

 ing a small ricige in the centre, which forms a continuous line along the arm. 

 Disk rather thick, naked below, but covered above with very minute rounded 

 scales, about 7 in the length of 1 mm. where they are finest. Radial shields 

 long and very narrow, tapering inward to a blunt point ; they are joined 

 without, and separated within by several small scales. Four slender tapering 

 arm-spines, the upper and under being usually somewhat longer than the two 

 in the middle. One very small lip-like tentacle-scale, on the inner side of 

 the tentacle-pore. Color in alcohol, dull gray. 



Station 232, 340 fathoms, 4 specimens. Station 236, 420 fathoms, 1 speci- 

 men. 



Amphiura Verrilli sp. nov. 



Plate XII. Figs. 329 - 331. 



Special Marks. — Four mouth-papillse on each side. Four arm-spines. No 

 tentacle-scales. Radial shields h.rge and wide, and joined for half their length. 



Description of an Individual (Station 54). — Diameter of disk 6 mm. Width 

 of arm, without spines, close to disk, 1 mm. Four short, blunt mouth-papillae 

 on each side, the two at the apex being largest and conical ; between them may 

 be seen the lowest tooth, having a broken edge. Mouth-shields small, rounded, 

 with a slight angle within. Side mouth-shields large, narrow within, where 

 they meet ; broader without, where they curve partially round the mouth-shield. 

 First under arm-plate very small ; those beyond are swollen, narrow, longer 

 than broad, having the outer edge much rounded, deep re-entering curves on 

 the lateral sides, and a short, straight side within. Side arm-plates small, 

 separated below, but just meeting above. Upper arm-plates much broader 

 than long, transverse oval, with the inner edge nearly straight, outer edge 

 curved, and blunt angles on the lateral sides. Disk flat, moderately thick and 



