144 BULLETIN OF THE 



Ophiaeantha longidens sp. nov. 



Plate X. Fig. 274. 



Special Marks. — Disk closely set with slender stumps, each bearing a cro^^^^ 

 of three to five long delicate thorns ; arm-spines translucent and thornj' ; 

 seven long slender mouth-papilloe ; tentacle-scales spiniform. 



Description of a Specimen (Station Cebu, Philippines). — Diameter of disk 

 4 mm. "Width of arm -without spines 1 mm. Seven mouth-papillse to each 

 angle, of which the lateral are long, spine-like, and blunt ; and the innermost 

 one is of a blunt spearhead form, like the four teeth above it. Mouth-shield 

 small, wider than long, bounded by a curve without, and an angle within. 

 Side mouth-shields small, narrow, meeting within. First under arm-plate 

 small and rounded ; second of an irregular transverse diamond-shape, wider 

 than long, having the lateral corners sharp, and a slight lobe without (Fig. 274) ; 

 those immediately beyond are similar, having a wide axe-shape, with a clean 

 curve without. Upper arm-plates small, of a wide fan-shape, with the angle 

 inward, and lateral comers sharp. Side arm-plates rather large, meeting above 

 and below, with a well-marked spine-ridge. Disk round, slightly puffed, 

 densely set with slender, minute stumps, each bearing a crown of three to five 

 long slender thorns. Scaling and radial shields hidden, except the outer tips 

 of the latter. Seven flattened, translucent, thorny, rather blunt arm-spines ; 

 lengths to that of an arm-joint 2, 2, 1.7, 1.7, 1, 1, .8 : .7. One spiniform tentacle- 

 scale. Color in alcohol, above, mottled brown ; below, white with brown 

 markings on arms. 



Cebu, Philippines, 95 - 100 fathoms, 1 specimen. 



Ophiaeantha nodosa sp. nov. 



Plate X. Flss. 258-861. 



Special Marks. — Six arms ; seven long mouth-papiUae to each angle ; disk 

 closely set with coarse, stout stumps having thorny ends and sides. 



Description of an Individual (Station 3). — Diameter of disk 7 mm. Width 

 of arm without spines 2.3 mm. Seven narrow mouth-papilla), the outer one 

 longest. Teeth long and narrow, though stouter than mouth-papillae. Mouth- 

 shield small pentagonal, with a wide angle inward ; length to breadth .7 : .7. 

 Side mouth-shields long, narrow and curved, meeting within and extending 

 without much beyond the mouth-shield. Under arm-plates pentagonal, with 

 a strongly curved outer side, and lateral and inner lateral sides re-enteringly 

 curved ; length to breadth (third plate) .8:1. Upper arm-plates broad, trans- 

 verse diamond-shape, widely separated. Side arm-plates stout and promi- 

 nent, meeting freely above and below. Disk densely set with coarse stumps, 

 which bear a crown of strong thorns and are also usually thorny on their 

 Bides. Radial shields and scaling hidden, except the outer tips of the former. 



