THE STARFISHES OF THE HAWAIIAN ISLANDS. 
1065 
are 12 to 15 pedicellarise, about half the size of those already described, scattered over the remainder 
of the interradial areas, the plates of which are covered with closely placed, flat, irregular granules 
similar to those of abactinal plates. Granules surrounding pedicellarise are raised slightly above the 
level of the others. 
Madreporic body of medium size, subcircular, slightly convex, situated one-third distance from 
center of disk to extreme margin. Perforated with coarse, irregular holes; no strise. 
Color in life: Dull yellow on dorsal surface, brightest on marginal plates; central part of dorsal 
area with a brownish cast. Actinal surface a pale Naples yellow with a brownish suggestion. 
Locality: Station 4041, west coast of Hawaii Island, 382-253 fathoms, gray mud, foraminifera; 
bottom temperature 41.6°. One specimen, type no. 21168, TJ. S. National Museum. 
The peculiar large bivalved pedicellarise of this species remind one very strongly of Hippasteria, 
but the absence of spines and the structure of the skeleton are more like Tosia. The very unusual 
flat ossicle-like granules are unlike those of any goniasterid with which I am acquainted. Gilbertaster 
appears to be allied to some of the Hippasterinse, particularly to Cryptopeltaster from off the California 
coast. The latter genus is undoubtedly a member of the Hippasterinse. I am inclined to regard the 
present form as intermediate between the Goniasterinse and Hippasterinse, and have consequently placed 
it provisionally at the end of the former subfamily. It might be considered with almost equal 
propriety an aberrent member of the Hippasterinse. 
This genus is named for Dr. Charles Henry Gilbert. 
Subfamily HIPPASTERIN5! Verrill, 1899. 
Hippasterinse Verrill, Revision of Certain Genera and Species of Starfishes, with Descriptions of New Forms. <Trans. 
Conn. Acad. , vol. x, 1899, p. 174. 
Genus EV0PL0S0MA, new. 
Tjme Evoplosoma forcipifera, new species. 
General form that of Hippasteria, which it resembles also in the ossicles and spines; but the whole 
test (both ossicles and spines) is overlaid by soft fleshy membrane, which in life completely hides the 
outlines of plates. Abactinal and actinal pedicellarise erect, with rounded spatulate denticulate blades. 
Abactinal surface paved with small roundish plates, interspersed with still smaller roundish second- 
ary plates, bearing smooth or rugose granules sheathed in pulpy membrane and erect rigid spines and 
spinules, the former partially encased in membrane, the latter wholly. Spines and granules on mar- 
ginal and actinal plates of the same character as the abactinal. Furrow spines remarkably thin and 
compressed, especially adorally, 3 or 4 to the plate, and wi h expanded chisel-like tips. Actinal 
adambulacral spines very robust, curiously expanded at the tip, and often gouge-shaped; usually 
single with an accompanying large spatulate “ sugar-tongs ” pedicellaria. 
While this genus is undoubtedly closely related to some species of Hippasteria, the persistent, and 
in life soft pulpy membrane which covers the whole test will serve at once to distinguish it. This 
membrane invests each granule individually, hiding the calcareous part and causing the granulation 
to have a crowded, soft, warty appearance. From this surface the conical spines and' pedicellarise 
raise themselves in a short bristling armature. The whole animal, as in Hippasteria, is very rigid. 
When the test is dried the membrane shrinks greatly, and the roughened granules are easily seen, 
then appearing separated. But in life this is not the case because the membrane investment fills up 
all the intervening space, causing the granules to appear very much larger. The high pedicellarise 
are unlike those of typical Hippasteria, although easily derived from them by slight modification. 
Prof. A. E. Verrill agrees with me that this species constitutes a new genus. 
Evoplosoma forcipifera, new species. 
PI. xxvi, figs. 5, 5a-c; pi. xxvii, figs. 4, 4a-b; pi. xxix, fig. 3. 
Rays 5. R=56 mm.; r=24 mm.; R=2.3 r. Breadth of ray at base, between third and fourth 
superomarginals, 11 mm. 
Disk large, pentagonal, inflated, narrowing abruply into slender, tapering rays, which end in a 
blunt point. Body bristling all over with short, stout, conical spines. Disk very distinct from rays, 
which appear as if attached to its corners. Integument stout; whole animal rigid. Marginal plates 
not distinct. Interbrachial arc very wide, straight, not curved in median portion. 
Abactinal area conspicuously inflated about border, and paved with rather small round plates, 
among which are smaller secondary roundish plates. They are immersed in a tough membrane, and 
