SEA LILIES, STARFISHES, ETC.—CLARK. 93. 
Family OPHIOLEPIDID. 
Genus AMPHIOPHIURA, Matsumoto. 
AMPHIOPHIURA COLLETA!, sp. nov. 
(Plate xxxvii., fig. 1-2.) 
Disk 17mm. in diameter; arms all broken, but one is 
nearly 50 mm. long and indicates a probable length of 55 mm. 
or more. Disk covered by a coat of 21 large, flat, smooth 
scales and the 10 radial shields, between which, in the angles, 
are much smaller, more or less triangular scales; many of 
these little scales and some of the larger show a narrow, 
marginal border as though cemented down to the neighbouring 
plates ; primary plates very distinct, about 2.5mm. across, 
but not conspicuous. Radial shields, 3-4mm. long and 
nearly or quite as broad, irregularly rounded triangular, 
smooth, the inner ends separated by a large scale, but the 
distal inner corner of one distinctly overlapping the corre- 
sponding corner of the other for more than a millimeter. 
Basal upper arm plate about twice as broad as long ; second 
and third at least three times as broad as long ; the succeeding 
7 or 8 plates are tetragonal, wider than long, broadly in 
contact, with distal margin convex and much wider than 
proximal ; beyond the tenth joint the upper arm plates tend 
to become triangular, as long as broad, and separated from 
each other, the condition they show on distal half of arm. 
Interbrachial areas below covered by the oral shield, a large 
marginal plate, wider than long and 5 smaller, somewhat 
swollen plates, between them. Genital plates large, more than 
a millimeter wide at the upper end, bearing an arm-comb of 
about 25 low, triangular papille, placed closely side by side ; 
there are no papille on the arm plates. 
Oral shields oval, sharply pointed proximally, 4mm. long 
by 3mm. wide; adoral plates, short, three times as long as 
broad, meeting fully and closely within; oral plates larger 
than adorals, only slightly swollen. Teeth only 4, triangular. 
Oral papillz only 3 on a side, borne wholly on the oral plates ; 
the innermost is like the teeth, but narrower, while the other 
two are very wide and notched like the molar teeth of a dog. 
Oral tentacle-pore (the second or distal one, of course) opens 
entirely outside mouth slit, at distal end of oral plate ; its 
inner side is guarded by 4 papille, its outer by 6. First under 
arm plate large, octagonal, much wider than long ; second 
longer and narrower, hexagonal, about as long as wide ; 
1. cohAntos=glued together; in reference to the appearance of the 
disk plates. 
