NO. 1608. ] NEW SPECIES OF CRINOIDS—CLARK. , WON: 
again as long as a wide. the eighth twice as leony as wide, the ment and 
tenth about Thal again as long as wide, the folllesitine squarish, grad- 
ually becoming shorter distally; the joints up to, and including most 
of, the eighth, are dull and rather rounded im cross-section; the 
distal portion of the eighth and the remaining joints are polished 
and more compressed; from the twelfth or thirteenth onward dorsal 
spines are developed. 
Ends of basal rays visible as a bunch of branching spines in the 
angles of the calyx; radials even with the edge of the centro-dorsal ; 
first costals very short ; costal axillaries rhombic, over twice as broad as 
long; distichals 4 (8+4), rarely 2 (in the type five times the 
former, once the latter) ; palmars (when present) 2, developed on the 
inside of the arms (1, 2, 2,1). Seventeen arms (in the type) 180 
mm. long; first 10 brachials oblong, about twice as broad as long, 
then becoming triangular, about as long as broad, distally becoming 
quadrate and more elongate. The costals and oblong lower brachials 
have everted edges armed with numerous spines; the following 
brachials have the edges everted, but more bluntly spimous; the distal 
brachials have overlapping and spinous distal edges; the axillaries 
and second distichals (whether axillaries or not) and the second 
brachials bear a sharp median keel, which is absent from all the 
other joints. 
The first pinnule (and distichal A iti when present) is 18 mm. 
long, stout (but not so stout as in 7. hawaiiensis), with 22 joints, 
all of which are much broader than long and strongly carinate; the 
second pinnule is 10 mm. long and much more slender, the third and 
following 8 mm. long; the distal pinnules reach a length of 27 mm. > 
~ Color (in life).—Cirri light chrome yellow; arms light chocolate 
(Fisher). 
Locality.—Albatross Station No. 3985; WHanamaulu warehouse 
(Kauai) bearing 8. 53° 30’ W., 6 miles distant; 477-430 fathoms; 
eray sand, fueamminiters! and shore deposit. 
One specimen. 
Type.—Cat. No. 22687, U.S.N.M. 
Remarks.—Vhe very large size, comparatively slender first pin- 
nule with relatively numerous joints, and the presence of palmars, as 
well as the remarkable proportionate stoutness of the cirri, distin- 
guish this species from the small 10 to 12 armed 7. hawadiensis, in 
which the first pinnule is exceedingly stout, with only 12 joints. 
THALASSOMETRA FISHERI, new species. 
Centro-dorsal hemispherical, rather small, the cirrus sockets in 10 
columns, 2 in each radial area, and 2 to a column. 
Cirri 20 mm. long with 20 to 27 joints (most commonly 25 to 27), 
the first very short, the next two progressively longer, the fourth 
