ANNOTATED LIST. 87 
Hacelia inarmata. 
ee helicostichus Sladen var. inarmatus Koehler. 1895. Mem. Soc. Zool. France, 8, p. 400, pl. ix, figs. 
It seems to me quite clear that Koehler’s specimen (R=95 mm.) from the Sunda 
Islands is a Hacelia, as his careful description reveals the generic features plainly. More- 
over, the specimen can not well be referred to helicosticha because of the absence of pedi- 
cellarie and the uniform size of the furrow spines. The only course seems to be to raise 
it to the rank of a valid species. 
Hacelia superba! sp. nov. 
(Plate 32.) 
R =75-78 mm.; r=13-14 mm.; br =16-17 mm.; br half-way to tip of ray, 12 mm., 
and three-fourths of the way, 8.5 mm.; R =5.3-6 r and 4.4—5 br; vertical diameter of disk 
and height of base of ray about 15 mm. Disk high, but flat. Rays high, wide, and some- 
what trigonal at base, flattened on actinal surface, tapering steadily from base to tip. 
Skeletal plates more or less octagonal, becoming nearly circular distally, basally wider 
than long, somewhat swollen, so that the papular areas are notably sunken, covered by a 
smooth coat of granules of uniform height and showing only a little diversity in size and 
shape; over most of each of the larger plates the granules are hexagonal and closely packed, 
0.20 to 0.25 mm. across, while elsewhere they are more nearly circular, less closely packed 
and only 0.10 to 0.15 mm. in diameter, but the intergradations are gradual and complete. 
Papular areas nearly circular 1 to 2 mm. across, markedly depressed, with 8 to 22 papule. 
On basal part of ray, marginal plates similar to abactinal, but distally they become squarish 
or wider than long, and the last 3 to 6 in each series are more or less bare; the bare area 
is convex, smooth, and circular, or elliptical with the greater axis vertical. Terminal 
plate hemispherical, naked, and swollen, about 2 mm. in diameter. Madreporite triangular, 
3.5 mm. high and 3 mm. across the upper margin, slightly elevated, but with a somewhat 
concave surface. No pedicellariz anywhere. 
Skeletal plates of actinal surface, so far as can be judged without removal of the 
closely granulated skin, just as in H. attenuata as described and figured by Ludwig (1897). 
Actinal series of papular areas perfectly evident but more or less incomplete and extending 
only to about the middle of the ray; each area contains from 2 to 8 papule and as a rule 
the areas directly below the inferomarginal areas are noticeably smaller and more likely 
to fail altogether than the alternate ones. Furrow spinelets long, conspicuous, subequal, 
with rounded tips; they are about 1.20 to 1.50 mm. long, 0.40 to 0.50 mm. wide and 0.20 
to 0.30 mm. thick. Subambulacral spines very regularly one to each plate; proximally 
they are 1.75 to 1.90 mm. long, 0.70 to 0.90 mm. wide and about 0.30 mm. thick, but dis- 
tally they become shorter and stouter, so that near tip of ray they are less than a milli- 
meter long, while the width and thickness may be 0.60 to 0.70 mm. On the first adam- 
bulacral plate, adjoining the orals, there are often 2 subambulacral spines, one behind the 
other. Oral plates not peculiar in any way, but with only one suboral spine on each. 
Color in life unknown; the dry specimen is fawn-color. 
Holotype, M. C. Z., No. 764; off Barbados, 100 fathoms. Hassler expedition. 
This fine sea-star has lain undescribed in the Museum of Comparative Zodlogy col- 
lection for nearly half a century. It is somewhat remarkable that no other representative 
of the species has during that time been found by either the Blake, the Albatross, or any 
of the other parties that have collected in the West Indies. The relationship to H. attenuata 
is of course obvious, but the general appearance is not very similar to that of the Medi- 
terranean species. 
' Superbus =magnificent, in reference to the exceptionally symmetrical and fine appearance, as shown by 
the holotype. 
