THE STARFISHES OF THE HAWAIIAN ISLANDS. 
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marginals; in the arrangement of spinelets on the actinal surface of the adambulacral plates, and 
especially in the actinal interradial plates, which are not strongly carinated, as in sladeni. The dorsal 
stomach in nesiotes is connected with the intestinal coecum by a short intestine, but is not in sladeni. 
Dipsacaster sladeni was dredged in the Andaman Sea, 250 fathoms. 
Genus PATAGIASTER, new. 
Type Patagiaster nuttingi, new species. 
General form, character of rays, and disk as in Dipsacaster. Marginal plates also similar except 
that in the interbrachial arcs and on the basal portion of rays the inferomarginal spines form a trans- 
verse series instead of being mostly crowded at the abactinal end. 
Abactinal surface very compact, the paxillse much larger than in Dipsacaster, more crowded. They 
are fiat-topped and have a central group of about 15 to 40 granules surrounded by a very numerous 
and regular marginal series of elongated granules, the whole resembling a composite flower. In 
Dipsacaster the paxillse consist of many capillary spinelets in glomerular tufts on a slender pedicel, 
and have a quite different facies. 
Papular pores absent from median radial portion of rays, and from center of disk. They do not 
extend beyond the madreporic body any distance toward center of disk. In Dipsacaster the papulse 
are very numerous and generally distributed. 
Actinal interradial areas large. Actinal intermediate plates, adambulacral plates, mouth plates, 
and their armature essentially as in Dipsacaster. 
Superambulacral plates present, reduced to the basal half of ray. Anal opening present; connec- 
tion as in Dipsacaster nesiotes. Gonads confined to interradial areas, not forming a longitudinal series 
along either side of the dorsal integument of ray. 
Madreporic body large; hidden by paxillse as in Dipsacaster. No pedicellarise. 
This genus is erected on the strength of the following characters: Distribution of gonads; distri- 
bution of papulae; character of abactinal paxillse. In these respects it differs from Dipsacaster. From 
Plutonaster it differs in respect to the form and armature of the marginal plates, and from Parastro- 
pecten in the same characters, and in possessing an anal aperture. The last character is of little 
importance generically. Parastropecten is very close to Lepty chaster. 
Patagiaster nuttingi, new species. 
PI. IX, figs. 2, 2a; pi. XII, fig. 3; pi. xvn.fig.l. 
Rays 5. R=42mm.; r=14.5 mm. R=2.9r. Breadth of ray at base (between first and second 
superomarginals) 15 mm. 
Disk large; rays stout, tapering from a broad base evenly to a pointed but not attenuate extremity. 
Interbrachial arcs wide and rounded, in some specimens with a slight tendency to become angular. 
General form depressed and flat, the abactinal area as a rule a trifle inflated; actinal surface plane. 
Abactinal paxillar area is very compact and uniform in character, and is covered, with close-set 
paxillse which are largest along the margin of area and in the interradii, where they are arranged in 
oblique transverse rows. The median radial portion of each arm, and the center of disk, is more or 
less conspicuously marked off from the above areas, being covered with more crowded paxillse scarcely 
more than half as large as those just described. Paxillse of the central portion of disk are usually 
slightly smaller than those of the median radial area of rays. Each paxilla consists of a stout pedicel, 
with a slightly flaring, circular, nearly flat summit, bearing a crown of granuliform spinelets, the 
centrally situated ones being stouter than the peripheral. The larger paxillse bear a central group of 
upwards of 30 or 35, surrounded by a peripheral series of about 25 to 30. The smaller paxillse of the 
arms have about 10 granules in the central group, and 15 to 20 in the peripheral series. In specimens 
from other localities (e. g., station 3836) the paxillse do not average so large, having 20 to 25 as the 
maximum number for the central group of spinelets. In these specimens the summit of the pedicel 
is slightly convex. The bases of all the pedicels are expanded into roundish, irregular, or stellate 
plates, the last being more prevalent in interbrachial arcs. Papular pores are confined to the area of 
large paxillse, i. e., the margin of the abactinal area. They are absent from the median radial portion 
of rays, and from central portion of disk. Papulse large, single. 
